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प्र: If a girl cycles at 10 kmph, then she arrives at a certain place at 1 p.m. If she cycles at 15 kmph, she will arrive at the same place at 11 a.m. At what speed must she cycle to get there at noon? 1732 0

उत्तर : 3. "12 kmph"
व्याख्या :
Answer: C) 12 kmph Explanation: The distance is constant in this case. Let the time taken for travel with a speed of 10 kmph be 't'. Now the speed of 15 kmph is 3/2 times the speed of 10 kmph. Therefore, time taken with the speed of 15 kmph will be 2t/3 (speed is inversely proportional to time) Extra time taken = t - 2t/3 = t/3 => 1pm - 11am = 2hrs => t/3 = 2h => t = 6 hrs. Now, Distance = speed x time = 10 x 6 = 60 kms Time he takes to reach at noon = 6 - 1 = 5 hrs Now, Speed = 60/5 = 12 kmph.

प्र: 100 percent of which number is 20? 1732 0

उत्तर : 3. "20"
व्याख्या :
Answer: C) 20 Explanation: Let the rquired number be 'P' According to the question, 100 x P100 = 20=> P = 20 x 100100 = 20 Hence, 100 percent of the number 20 is 20. Now, you can also try for 20 percent of what number is 100 20 x P100 = 100=> P = 100 x 10020 = 500=> P = 500 Hence, 20 percent of the number 500 is 100.

प्र: The question given below contain two statements giving certain data. You have to decide whether the data given in the statements are sufficient for answering the question ? Question : What is the height of a right-angled triangle ? Statements : A. The area of the triangle is 20 times its base. B. The perimeter of the triangle is equal to that of a square of the side 10 cm. 1730 0

उत्तर : 1. "Only statement A is required"
व्याख्या :
Answer: A) Only statement A is required Explanation: From statement (A), 20b = (1/2) × b × h h = 40 cm.

प्र: 9 17 11 19 13 What Are The Next Three Numbers In The Given Number Series? 1730 0

उत्तर : 3. "21, 15, 23"
व्याख्या :
Answer: C) 21, 15, 23 Explanation: Given number series is 9 17 11 19 13 Here the pattern is 9 9 + 8 = 17 17 - 6 = 11 11 + 8 = 19 19 - 6 = 13 13 + 8 = 21 21 - 6 = 15 15 + 8 = 23

प्र: An alloy of copper and bronze weight 50g. It contains 80% Copper. How much copper should be added to the alloy so that percentage of copper is increased to 90%? 1729 0

उत्तर : 2. "50 gm"
व्याख्या :
Answer: B) 50 gm Explanation: Initial quantity of copper =80100 x 50 = 40 g And that of Bronze = 50 - 40 = 10 g Let 'p' gm of copper is added to the mixture => 50 + p x 90100 = 40 + p => 45 + 0.9p = 40 + p => p = 50 g Hence, 50 gms of copper is added to the mixture, so that the copper is increased to 90%.

प्र: In what ratio must a merchant mix two varieties of oils worth Rs. 60/kg and Rs. 65/kg, so that by selling the mixture at Rs. 68.20/kg, he may gain 10% ? 1729 0

उत्तर : 4. "3:2"
व्याख्या :
Answer: D) 3:2 Explanation: Let he mixes the oils in the ratio = x : y Then, the cost price of the oils = 60x + 65y Given selling price = Rs. 68.20 => Selling price = 68.20(x+y) Given profit = 10% = SP - CP => 10/100 (60x + 65y) = 68.20(x+y)-(60x + 65y) => 6x + 6.5y = 8.20x + 3.20y =>2.2x = 3.3y => x : y = 3 : 2

प्र: Simplify 2392-21+8-72=?2 1729 0

उत्तर : 3. "6"
व्याख्या :
Answer: C) 6 Explanation: ?2 = 2×78-21+8+49-148= 57 - 21=36=> ? = ±6

प्र: Express 0.875 and 0.375 as a Fraction. 1728 0

उत्तर : 3. "7/8 & 3/8"
व्याख्या :
Answer: C) 7/8 & 3/8 Explanation: Given 0.875 and 0.375 0.875 :: After decimal point there are 3 digits 875 Now, mutiply and divide 0.875 with 1000 0.875 x 10001000 = 8751000 Now, this can be reduced to fraction 78Therefore, 0.875 as fraction = 78 Similarly, 0.375 :: After decimal point there are 3 digits 375 Now, mutiply and divide 0.375 with 1000 0.375 x 10001000 = 3751000Now, this can be reduced to fraction 38Therefore, 0.375 as fraction = 38

प्र: If a girl cycles at 10 kmph, then she arrives at a certain place at 1 p.m. If she cycles at 15 kmph, she will arrive at the same place at 11 a.m. At what speed must she cycle to get there at noon? 1732 0

प्र: 100 percent of which number is 20? 1732 0

उत्तर : 1. "Only statement A is required"
व्याख्या :
Answer: A) Only statement A is required Explanation: From statement (A), 20b = (1/2) × b × h h = 40 cm.

प्र: 9 17 11 19 13 What Are The Next Three Numbers In The Given Number Series? 1730 0

उत्तर : 3. "21, 15, 23"
व्याख्या :
Answer: C) 21, 15, 23 Explanation: Given number series is 9 17 11 19 13 Here the pattern is 9 9 + 8 = 17 17 - 6 = 11 11 + 8 = 19 19 - 6 = 13 13 + 8 = 21 21 - 6 = 15 15 + 8 = 23

प्र: An alloy of copper and bronze weight 50g. It contains 80% Copper. How much copper should be added to the alloy so that percentage of copper is increased to 90%? 1729 0

प्र: In what ratio must a merchant mix two varieties of oils worth Rs. 60/kg and Rs. 65/kg, so that by selling the mixture at Rs. 68.20/kg, he may gain 10% ? 1729 0

प्र: Simplify 2392-21+8-72=?2 1729 0

उत्तर : 3. "6"
व्याख्या :
Answer: C) 6 Explanation: ?2 = 2×78-21+8+49-148= 57 - 21=36=> ? = ±6

प्र: Express 0.875 and 0.375 as a Fraction. 1728 0

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प्र: If a girl cycles at 10 kmph, then she arrives at a certain place at 1 p.m. If she cycles at 15 kmph, she will arrive at the same place at 11 a.m. At what speed must she cycle to get there at noon? 1732 05b5cc6bfe4d2b4197774da42

प्र: 100 percent of which number is 20? 1732 05b5cc6b0e4d2b4197774d28d

उत्तर : 1. "Only statement A is required" व्याख्या :Answer: A) Only statement A is required Explanation: From statement (A), 20b = (1/2) × b × h h = 40 cm.

प्र: 9 17 11 19 13 What Are The Next Three Numbers In The Given Number Series? 1730 05b5cc6bae4d2b4197774d78f

उत्तर : 3. "21, 15, 23" व्याख्या :Answer: C) 21, 15, 23 Explanation: Given number series is 9 17 11 19 13 Here the pattern is 9 9 + 8 = 17 17 - 6 = 11 11 + 8 = 19 19 - 6 = 13 13 + 8 = 21 21 - 6 = 15 15 + 8 = 23

प्र: An alloy of copper and bronze weight 50g. It contains 80% Copper. How much copper should be added to the alloy so that percentage of copper is increased to 90%? 1729 05b5cc6aee4d2b4197774d179

प्र: In what ratio must a merchant mix two varieties of oils worth Rs. 60/kg and Rs. 65/kg, so that by selling the mixture at Rs. 68.20/kg, he may gain 10% ? 1729 05b5cc6c6e4d2b4197774de5e

प्र: Simplify 2392-21+8-72=?2 1729 05b5cc6b9e4d2b4197774d775

उत्तर : 3. "6" व्याख्या :Answer: C) 6 Explanation: ?2 = 2×78-21+8+49-148= 57 - 21=36=> ? = ±6

प्र: Express 0.875 and 0.375 as a Fraction. 1728 05b5cc6b3e4d2b4197774d3ed

त्रुटि की रिपोर्ट करें

त्रुटि की रिपोर्ट करें

त्रुटि की रिपोर्ट करें

त्रुटि की रिपोर्ट करें

त्रुटि की रिपोर्ट करें

त्रुटि की रिपोर्ट करें

त्रुटि की रिपोर्ट करें

त्रुटि की रिपोर्ट करें

प्र: If a girl cycles at 10 kmph, then she arrives at a certain place at 1 p.m. If she cycles at 15 kmph, she will arrive at the same place at 11 a.m. At what speed must she cycle to get there at noon? 1732 0

प्र: 100 percent of which number is 20? 1732 0

उत्तर : 1. "Only statement A is required"
व्याख्या :
Answer: A) Only statement A is required Explanation: From statement (A), 20b = (1/2) × b × h h = 40 cm.

प्र: 9 17 11 19 13 What Are The Next Three Numbers In The Given Number Series? 1730 0

उत्तर : 3. "21, 15, 23"
व्याख्या :
Answer: C) 21, 15, 23 Explanation: Given number series is 9 17 11 19 13 Here the pattern is 9 9 + 8 = 17 17 - 6 = 11 11 + 8 = 19 19 - 6 = 13 13 + 8 = 21 21 - 6 = 15 15 + 8 = 23

प्र: An alloy of copper and bronze weight 50g. It contains 80% Copper. How much copper should be added to the alloy so that percentage of copper is increased to 90%? 1729 0

प्र: In what ratio must a merchant mix two varieties of oils worth Rs. 60/kg and Rs. 65/kg, so that by selling the mixture at Rs. 68.20/kg, he may gain 10% ? 1729 0

प्र: Simplify 2392-21+8-72=?2 1729 0

उत्तर : 3. "6"
व्याख्या :
Answer: C) 6 Explanation: ?2 = 2×78-21+8+49-148= 57 - 21=36=> ? = ±6

प्र: Express 0.875 and 0.375 as a Fraction. 1728 0