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प्र: 4 men and 6 women can complete a work in 8 days, while 3 men and 7 women can complete it in 10 days. In how many days will 10 women complete it ? 1167 0

उत्तर : 1. "40 days"
व्याख्या :
Answer: A) 40 days Explanation: Let 1 man's 1 day work = x and 1 woman's 1 day work = y.Then, 4x + 6y = 1/8 and 3x + 7y = 1/10Solving these two equations, we get:x = 11/400 and y = 1/40010 woman's 1 day work = (1/400 x 10) = 1/40. Hence, 10 women will complete the work in 40 days.

प्र: The ratio of investments of two partners A and B is 7:5 and the ratio of their profits is 7:10. If A invested the money for 5 months, find for how much time did B invest the money ? 1903 0

उत्तर : 4. "10 months"
व्याख्या :
Answer: D) 10 months Explanation: 7x5: 5xk = 7:10k = 10 months

प्र: A man walks at a speed of 2 km/hr and runs at a speed of 6 km/hr. How much time will the man require to cover a distance of 20 1/2 km, if he completes half of the distance, i.e., (10 1/4) km on foot and the other half by running ? 1503 0

उत्तर : 2. "11.9 hrs"
व्याख्या :
Answer: B) 11.9 hrs Explanation: We know that Time = Distance/speedRequired time = (10 1/4)/2 + (10 1/4)/6 = 41/8 + 41/6= 287/24 = 11.9 hours.

प्र: The sum of three numbers is 98. If the ratio of the first to the second is 2:3. And that of the second to the third is 5:8, then the second number is: 1385 0

उत्तर : 1. "30"
व्याख्या :
Answer: A) 30 Explanation: Then, A:B = 2:3 and B:C = 5:8= (5 x 3/5) : (8 x 3/5) = 3:24/5A:B:C = 2:3:24/5= 10:15:24 => B = 98 x 15/49 = 30.

प्र: A tank is filled in eight hours by three pipes K, L and M. Pipe K is twice as fast as pipe L, and L is twice as fast as M. How much time will pipe L alone take to fill the tank ? 1267 0

उत्तर : 3. "28 hrs"
व्याख्या :
Answer: C) 28 hrs Explanation: 1/K + 1/L + 1/M = 1/8 (Given)Also given that K = 2L and L = 2M=> 1/2L + 1/L + 2/L = 1/8=> (1 + 2 + 4)/2L = 1/8=> 2L/7 = 8=> L = 28 hours.

प्र: The price of an article has been reduced by 35%. In order to restore the original price the new price must be increased by ? 1548 0

उत्तर : 4. "53.84 %"
व्याख्या :
Answer: D) 53.84 % Explanation: 100 65 -------65 ------- 35100 ------ ? => 53.84 %

प्र: When is International Day of Families observed ? 1550 0

उत्तर : 2. "May 15"
व्याख्या :
Answer: B) May 15 Explanation: 15 May. Theme of International Day of Family 2017 is “Families, education and well-being”.

प्र: What is the probability that a leap year has 53 Saturdays and 52 Sundays ? 2048 0

उत्तर : 1. "1/7"
व्याख्या :
Answer: A) 1/7 Explanation: A leap year has 52 weeks and two daysTotal number of cases = 7Number of favourable cases = 1i.e., {Friday, Saturday} Required Probability = 1/7

प्र: 4 men and 6 women can complete a work in 8 days, while 3 men and 7 women can complete it in 10 days. In how many days will 10 women complete it ? 1167 05b5cc6dfe4d2b4197774eb02

प्र: The ratio of investments of two partners A and B is 7:5 and the ratio of their profits is 7:10. If A invested the money for 5 months, find for how much time did B invest the money ? 1903 05b5cc6dfe4d2b4197774eaf3

उत्तर : 4. "10 months" व्याख्या :Answer: D) 10 months Explanation: 7x5: 5xk = 7:10k = 10 months

प्र: A man walks at a speed of 2 km/hr and runs at a speed of 6 km/hr. How much time will the man require to cover a distance of 20 1/2 km, if he completes half of the distance, i.e., (10 1/4) km on foot and the other half by running ? 1503 05b5cc6dfe4d2b4197774eaf8

उत्तर : 2. "11.9 hrs" व्याख्या :Answer: B) 11.9 hrs Explanation: We know that Time = Distance/speedRequired time = (10 1/4)/2 + (10 1/4)/6 = 41/8 + 41/6= 287/24 = 11.9 hours.

प्र: The sum of three numbers is 98. If the ratio of the first to the second is 2:3. And that of the second to the third is 5:8, then the second number is: 1385 05b5cc6dfe4d2b4197774eae9

उत्तर : 1. "30" व्याख्या :Answer: A) 30 Explanation: Then, A:B = 2:3 and B:C = 5:8= (5 x 3/5) : (8 x 3/5) = 3:24/5A:B:C = 2:3:24/5= 10:15:24 => B = 98 x 15/49 = 30.

प्र: A tank is filled in eight hours by three pipes K, L and M. Pipe K is twice as fast as pipe L, and L is twice as fast as M. How much time will pipe L alone take to fill the tank ? 1267 05b5cc6dfe4d2b4197774eaee

उत्तर : 3. "28 hrs" व्याख्या :Answer: C) 28 hrs Explanation: 1/K + 1/L + 1/M = 1/8 (Given)Also given that K = 2L and L = 2M=> 1/2L + 1/L + 2/L = 1/8=> (1 + 2 + 4)/2L = 1/8=> 2L/7 = 8=> L = 28 hours.

प्र: The price of an article has been reduced by 35%. In order to restore the original price the new price must be increased by ? 1548 05b5cc6dfe4d2b4197774eae4

उत्तर : 4. "53.84 %" व्याख्या :Answer: D) 53.84 % Explanation: 100 65 -------65 ------- 35100 ------ ? => 53.84 %

प्र: When is International Day of Families observed ? 1550 05b5cc6dfe4d2b4197774eadf

उत्तर : 2. "May 15" व्याख्या :Answer: B) May 15 Explanation: 15 May. Theme of International Day of Family 2017 is “Families, education and well-being”.

प्र: What is the probability that a leap year has 53 Saturdays and 52 Sundays ? 2048 05b5cc6dfe4d2b4197774eada

उत्तर : 1. "1/7" व्याख्या :Answer: A) 1/7 Explanation: A leap year has 52 weeks and two daysTotal number of cases = 7Number of favourable cases = 1i.e., {Friday, Saturday} Required Probability = 1/7

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प्र: 4 men and 6 women can complete a work in 8 days, while 3 men and 7 women can complete it in 10 days. In how many days will 10 women complete it ? 1167 0

प्र: The ratio of investments of two partners A and B is 7:5 and the ratio of their profits is 7:10. If A invested the money for 5 months, find for how much time did B invest the money ? 1903 0

उत्तर : 4. "10 months"
व्याख्या :
Answer: D) 10 months Explanation: 7x5: 5xk = 7:10k = 10 months

प्र: A man walks at a speed of 2 km/hr and runs at a speed of 6 km/hr. How much time will the man require to cover a distance of 20 1/2 km, if he completes half of the distance, i.e., (10 1/4) km on foot and the other half by running ? 1503 0

उत्तर : 2. "11.9 hrs"
व्याख्या :
Answer: B) 11.9 hrs Explanation: We know that Time = Distance/speedRequired time = (10 1/4)/2 + (10 1/4)/6 = 41/8 + 41/6= 287/24 = 11.9 hours.

प्र: The sum of three numbers is 98. If the ratio of the first to the second is 2:3. And that of the second to the third is 5:8, then the second number is: 1385 0

उत्तर : 1. "30"
व्याख्या :
Answer: A) 30 Explanation: Then, A:B = 2:3 and B:C = 5:8= (5 x 3/5) : (8 x 3/5) = 3:24/5A:B:C = 2:3:24/5= 10:15:24 => B = 98 x 15/49 = 30.

प्र: A tank is filled in eight hours by three pipes K, L and M. Pipe K is twice as fast as pipe L, and L is twice as fast as M. How much time will pipe L alone take to fill the tank ? 1267 0

उत्तर : 3. "28 hrs"
व्याख्या :
Answer: C) 28 hrs Explanation: 1/K + 1/L + 1/M = 1/8 (Given)Also given that K = 2L and L = 2M=> 1/2L + 1/L + 2/L = 1/8=> (1 + 2 + 4)/2L = 1/8=> 2L/7 = 8=> L = 28 hours.

प्र: The price of an article has been reduced by 35%. In order to restore the original price the new price must be increased by ? 1548 0

उत्तर : 4. "53.84 %"
व्याख्या :
Answer: D) 53.84 % Explanation: 100 65 -------65 ------- 35100 ------ ? => 53.84 %

प्र: When is International Day of Families observed ? 1550 0

उत्तर : 2. "May 15"
व्याख्या :
Answer: B) May 15 Explanation: 15 May. Theme of International Day of Family 2017 is “Families, education and well-being”.

प्र: What is the probability that a leap year has 53 Saturdays and 52 Sundays ? 2048 0

उत्तर : 1. "1/7"
व्याख्या :
Answer: A) 1/7 Explanation: A leap year has 52 weeks and two daysTotal number of cases = 7Number of favourable cases = 1i.e., {Friday, Saturday} Required Probability = 1/7