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प्र: 60 percent of 2/7 of three-fourth of a number is 2664. What is the number ? 1328 0

उत्तर : 1. "20720"
व्याख्या :
Answer: A) 20720 Explanation: Let N be the required number. => 60100x27x34xN=2664 => N = 2664x2x7x5/9 => N = 20720.

प्र: If 25% of three-seventh of 26% of a number is 145.5, what is the number? 1327 0

उत्तर : 3. "5223"
व्याख्या :
Answer: C) 5223 Explanation: Given, 25% of three-seventh of 26% of a number is 145.5 Let the required number be 'N' i.e, 25100x37x26100xN = 145.5 N = 145.5x7x1000075x26 => N = 5223.07

प्र: The price of a car is increased by 25%, by how much percent, must the new price of this car be decreased to restore its original price ? 1314 0

उत्तर : 1. "20%"
व्याख्या :
Answer: A) 20% Explanation: Suppose that the original price of the car = Rs. x Then new price of the car => (x) + (x ×25/100) = Rs. 5x/4 To restore the original price, the new price must be decreased by 5x/4 − x = x/4 So required percentage =(x/4)/(5x/4) × 100% = 20%

प्र: A sum of Rs. 4,300 is distributed among M, N and O, such that M receives 25% more than N and N receives 25% less than O. What is O’s share in the amount? 1310 0

उत्तर : 2. "1600"
व्याख्या :
Answer: B) 1600 Explanation: Let O's share = Rs. P => N's share = 75100 x P = 3P4 M's share = 54 x 3P4 = 15P16 15P16 + 3P4 + P = 4300=> P = 4300 x 1643 = 1600

प्र: A man purchases two articles, on selling one at loss of 20% while the other at a profit of 25%, he gains the overall profit of 5% than find the ratio of their selling price ? 1307 0

उत्तर : 1. "8 : 62.5"
व्याख्या :
Answer: A) 8 : 62.5 Explanation: Article I Article II -20 25% 5% 20% 25% 4 : 5 Now, Selling of first article = (4-20%) = 0.8 Selling of second article = (5+25%) = 6.25 Therefore the ratio of selling price = 8 : 62.5

प्र: A class consists of both boys and girls along with a teacher. After a class, the teacher drinks 9 litres of water, a boy drinks 7 litres of water and a girl drinks 4 litres of water. If after a class 42 litres of water was consumed, find the number of girls in the class ? 1305 0

उत्तर : 4. "3"
व्याख्या :
Answer: D) 3 Explanation: Given teacher drinks 9 ltrLet number of boys be 'A'.Let number of girls be 'B'.Boy drinks 7 ltr and girl drinks 4 ltrAfter class total water consumed = 42 ltrThen,9 + 7A + 4B = 42=> 7A + 4B = 33By trial and error method,The only integers which satisfy the equation is A = 3 and B = 3Therefore, number of girls in the class = 3.

प्र: Simplify the following equation [K-L2-K+L2]4K = a/b 1301 0

उत्तर : 2. "bL = -a"
व्याख्या :
Answer: B) bL = -a Explanation: [(K-L)2-K+L2]4K = abK2+L2-2KL-K2+L2+2KL4K= ab => - 4KL/4K = a/b => L = - a/b => bL = -a

प्र: If x and y are the two digits of the number 653xy such that this number is divisible by 80, then x+y is equal to ? 1297 0

उत्तर : 4. "2"
व्याख्या :
Answer: D) 2 Explanation: Since 653xy is divisible by 5 as well as 2, so y = 0.Now, 653x0 must be divisible by 8.So, 3x0 must be divisible by 8. This happens when x = 2x + y = (2 + 0) = 2.

प्र: 60 percent of 2/7 of three-fourth of a number is 2664. What is the number ? 1328 0

उत्तर : 1. "20720"
व्याख्या :
Answer: A) 20720 Explanation: Let N be the required number. => 60100x27x34xN=2664 => N = 2664x2x7x5/9 => N = 20720.

प्र: If 25% of three-seventh of 26% of a number is 145.5, what is the number? 1327 0

उत्तर : 3. "5223"
व्याख्या :
Answer: C) 5223 Explanation: Given, 25% of three-seventh of 26% of a number is 145.5 Let the required number be 'N' i.e, 25100x37x26100xN = 145.5 N = 145.5x7x1000075x26 => N = 5223.07

प्र: The price of a car is increased by 25%, by how much percent, must the new price of this car be decreased to restore its original price ? 1314 0

प्र: A sum of Rs. 4,300 is distributed among M, N and O, such that M receives 25% more than N and N receives 25% less than O. What is O’s share in the amount? 1310 0

उत्तर : 2. "1600"
व्याख्या :
Answer: B) 1600 Explanation: Let O's share = Rs. P => N's share = 75100 x P = 3P4 M's share = 54 x 3P4 = 15P16 15P16 + 3P4 + P = 4300=> P = 4300 x 1643 = 1600

प्र: A man purchases two articles, on selling one at loss of 20% while the other at a profit of 25%, he gains the overall profit of 5% than find the ratio of their selling price ? 1307 0

उत्तर : 1. "8 : 62.5"
व्याख्या :
Answer: A) 8 : 62.5 Explanation: Article I Article II -20 25% 5% 20% 25% 4 : 5 Now, Selling of first article = (4-20%) = 0.8 Selling of second article = (5+25%) = 6.25 Therefore the ratio of selling price = 8 : 62.5

प्र: A class consists of both boys and girls along with a teacher. After a class, the teacher drinks 9 litres of water, a boy drinks 7 litres of water and a girl drinks 4 litres of water. If after a class 42 litres of water was consumed, find the number of girls in the class ? 1305 0

प्र: Simplify the following equation [K-L2-K+L2]4K = a/b 1301 0

उत्तर : 2. "bL = -a"
व्याख्या :
Answer: B) bL = -a Explanation: [(K-L)2-K+L2]4K = abK2+L2-2KL-K2+L2+2KL4K= ab => - 4KL/4K = a/b => L = - a/b => bL = -a

प्र: If x and y are the two digits of the number 653xy such that this number is divisible by 80, then x+y is equal to ? 1297 0

उत्तर : 4. "2"
व्याख्या :
Answer: D) 2 Explanation: Since 653xy is divisible by 5 as well as 2, so y = 0.Now, 653x0 must be divisible by 8.So, 3x0 must be divisible by 8. This happens when x = 2x + y = (2 + 0) = 2.

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प्र: 60 percent of 2/7 of three-fourth of a number is 2664. What is the number ? 1328 05b5cc6c7e4d2b4197774deb9

उत्तर : 1. "20720" व्याख्या :Answer: A) 20720 Explanation: Let N be the required number. => 60100x27x34xN=2664 => N = 2664x2x7x5/9 => N = 20720.

प्र: If 25% of three-seventh of 26% of a number is 145.5, what is the number? 1327 05b5cc6bfe4d2b4197774d9f1

उत्तर : 3. "5223" व्याख्या :Answer: C) 5223 Explanation: Given, 25% of three-seventh of 26% of a number is 145.5 Let the required number be 'N' i.e, 25100x37x26100xN = 145.5 N = 145.5x7x1000075x26 => N = 5223.07

प्र: The price of a car is increased by 25%, by how much percent, must the new price of this car be decreased to restore its original price ? 1314 05b5cc6c5e4d2b4197774dda0

प्र: A sum of Rs. 4,300 is distributed among M, N and O, such that M receives 25% more than N and N receives 25% less than O. What is O’s share in the amount? 1310 05b5cc6b0e4d2b4197774d2d0

उत्तर : 2. "1600" व्याख्या :Answer: B) 1600 Explanation: Let O's share = Rs. P => N's share = 75100 x P = 3P4 M's share = 54 x 3P4 = 15P16 15P16 + 3P4 + P = 4300=> P = 4300 x 1643 = 1600

प्र: A man purchases two articles, on selling one at loss of 20% while the other at a profit of 25%, he gains the overall profit of 5% than find the ratio of their selling price ? 1307 05b5cc6c7e4d2b4197774de9b

उत्तर : 1. "8 : 62.5" व्याख्या :Answer: A) 8 : 62.5 Explanation: Article I Article II -20 25% 5% 20% 25% 4 : 5 Now, Selling of first article = (4-20%) = 0.8 Selling of second article = (5+25%) = 6.25 Therefore the ratio of selling price = 8 : 62.5

प्र: Simplify the following equation [K-L2-K+L2]4K = a/b 1301 05b5cc6d6e4d2b4197774e674

उत्तर : 2. "bL = -a" व्याख्या :Answer: B) bL = -a Explanation: [(K-L)2-K+L2]4K = abK2+L2-2KL-K2+L2+2KL4K= ab => - 4KL/4K = a/b => L = - a/b => bL = -a

प्र: If x and y are the two digits of the number 653xy such that this number is divisible by 80, then x+y is equal to ? 1297 05b5cc761e4d2b4197774fd62

उत्तर : 4. "2" व्याख्या :Answer: D) 2 Explanation: Since 653xy is divisible by 5 as well as 2, so y = 0.Now, 653x0 must be divisible by 8.So, 3x0 must be divisible by 8. This happens when x = 2x + y = (2 + 0) = 2.

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प्र: 60 percent of 2/7 of three-fourth of a number is 2664. What is the number ? 1328 0

उत्तर : 1. "20720"
व्याख्या :
Answer: A) 20720 Explanation: Let N be the required number. => 60100x27x34xN=2664 => N = 2664x2x7x5/9 => N = 20720.

प्र: If 25% of three-seventh of 26% of a number is 145.5, what is the number? 1327 0

उत्तर : 3. "5223"
व्याख्या :
Answer: C) 5223 Explanation: Given, 25% of three-seventh of 26% of a number is 145.5 Let the required number be 'N' i.e, 25100x37x26100xN = 145.5 N = 145.5x7x1000075x26 => N = 5223.07

प्र: The price of a car is increased by 25%, by how much percent, must the new price of this car be decreased to restore its original price ? 1314 0

प्र: A sum of Rs. 4,300 is distributed among M, N and O, such that M receives 25% more than N and N receives 25% less than O. What is O’s share in the amount? 1310 0

उत्तर : 2. "1600"
व्याख्या :
Answer: B) 1600 Explanation: Let O's share = Rs. P => N's share = 75100 x P = 3P4 M's share = 54 x 3P4 = 15P16 15P16 + 3P4 + P = 4300=> P = 4300 x 1643 = 1600

प्र: A man purchases two articles, on selling one at loss of 20% while the other at a profit of 25%, he gains the overall profit of 5% than find the ratio of their selling price ? 1307 0

उत्तर : 1. "8 : 62.5"
व्याख्या :
Answer: A) 8 : 62.5 Explanation: Article I Article II -20 25% 5% 20% 25% 4 : 5 Now, Selling of first article = (4-20%) = 0.8 Selling of second article = (5+25%) = 6.25 Therefore the ratio of selling price = 8 : 62.5

प्र: Simplify the following equation [K-L2-K+L2]4K = a/b 1301 0

उत्तर : 2. "bL = -a"
व्याख्या :
Answer: B) bL = -a Explanation: [(K-L)2-K+L2]4K = abK2+L2-2KL-K2+L2+2KL4K= ab => - 4KL/4K = a/b => L = - a/b => bL = -a

प्र: If x and y are the two digits of the number 653xy such that this number is divisible by 80, then x+y is equal to ? 1297 0

उत्तर : 4. "2"
व्याख्या :
Answer: D) 2 Explanation: Since 653xy is divisible by 5 as well as 2, so y = 0.Now, 653x0 must be divisible by 8.So, 3x0 must be divisible by 8. This happens when x = 2x + y = (2 + 0) = 2.