Quantitative Aptitude Practice Question and Answer
8Q: If J is the interest on K and K is the interest on L, the rate and time is the same on both the cases. What is the relation between J, K and L ? 2049 05b5cc6d5e4d2b4197774e5d4
5b5cc6d5e4d2b4197774e5d4- 1J x J = KLfalse
- 2K x K= JLtrue
- 3L x L = JKfalse
- 4JKL = 1false
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Answer : 2. "K x K= JL"
Explanation :
Answer: B) K x K= JL Explanation: Let the Time be 'N' and Rate be 'R' J = (K x NR)/100 K = (L x NR)/100 J/K = NR/100 K/L = NR/100 J/K = K/L K x K = JL
Q: A can do a piece of work in 30 days. He works at it for 6 days and then B finishes it in 18 days. In what time can A and B together it ? 2049 05b5cc6d8e4d2b4197774e755
5b5cc6d8e4d2b4197774e755- 114 1/2 daysfalse
- 211 daysfalse
- 313 1/4 daysfalse
- 412 6/7 daystrue
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Answer : 4. "12 6/7 days"
Explanation :
Answer: D) 12 6/7 days Explanation: Let 'B' alone can do the work in 'x' days 6/30 + 18/x = 1 => x = 22.5 1/30 + 1/22.5 = 7/90 => 90/7 = 12 6/7 days
Q: Which one of the following is not a prime number? 2048 05b5cc6a8e4d2b4197774ce5c
5b5cc6a8e4d2b4197774ce5c- 191true
- 271false
- 341false
- 431false
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Answer : 1. "91"
Explanation :
Answer: A) 91 Explanation: Prime Numbers :: Numbers which are divisible by only 1 and itself are Prime Numbers. It's answer will be 91. Because 91 can be divisible by 7,13,91,1. It is quite clear that prime number should be divisible only by itself and by 1.
Q: A drink vendor has 368 liters of Maaza, 80 liters of Pepsi and 144 liters of Sprite. He wants to pack them in cans, so that each can contains the same number of liters of a drink, and doesn't want to mix any two drinks in a can. What is the least number of cans required ? 2046 05b5cc6e1e4d2b4197774ebc5
5b5cc6e1e4d2b4197774ebc5- 147false
- 246false
- 337true
- 435false
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Answer : 3. "37"
Explanation :
Answer: C) 37 Explanation: The number of liters in each can = HCF of 80, 144 and 368 = 16 liters.Number of cans of Maaza = 368/16 = 23Number of cans of Pepsi = 80/16 = 5Number of cans of Sprite = 144/16 = 9The total number of cans required = 23 + 5 + 9 = 37 cans.
Q: How many iron rods, each of length 7 mts and diameter 2 cms can be made out of 0.88 cubic metre of iron ? 2044 05b5cc77fe4d2b419777501c4
5b5cc77fe4d2b419777501c4- 1500false
- 2600false
- 3400true
- 4300false
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Answer : 3. "400"
Explanation :
Answer: C) 400 Explanation: Given length of iron rod =7 mts and and diameter of rod = 2 cms => r = 1/100 mts Therefore, Volume of one rod = πr2h cu. m = 227×11002×7cu. m = 115000 cu. m Given volume of iron = 0.88 cu. m Therefore, Number of rods = 0.88×500011 = 400.
Q: 12 students of class IX took part in GK quiz. If the number of boys is 4 more than the number of girls. Find the number of boys and girls took part in the quiz ? 2042 05b5cc6bfe4d2b4197774da79
5b5cc6bfe4d2b4197774da79- 17, 5false
- 29, 3false
- 38, 4true
- 46, 6false
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Answer : 3. "8, 4"
Explanation :
Answer: C) 8, 4 Explanation: Let the number of girls = x => x + x + 4 = 12 => 2x = 8 => x = 4 => Number of girls = 4 => Number of boys = 4 + 4 = 8
Q: P alone can do a piece of work in 24 days. The time taken by P to complete one-third of work is equal to time taken by Q to complete half of the work. How many days are required to complete by P and Q working together ? 2042 05b5cc6c2e4d2b4197774dbaa
5b5cc6c2e4d2b4197774dbaa- 19 3/5 daystrue
- 27 daysfalse
- 36 3/7 daysfalse
- 48 daysfalse
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Answer : 1. "9 3/5 days"
Explanation :
Answer: A) 9 3/5 days Explanation: Let the total work be 'W' As per the given information, P can complete the work 'W' in 24 days. => one day work of P = W/24 And also given that, The time taken by P to complete one-third of work is equal to time taken by Q to complete half of the work => PW/3 = QW/2 => P's 1 day = W/24 ? = W/3 => ? = 24W/3W = 8 => QW/2 = 8 days => Q alone can complete the work W in 16 days => P + Q can complete the work in 1/24 + 1/16 = 5/48 => 48/5 days = 9 3/5 days.
Q: Write 0.125 as a percent %? 2041 05b5cc6b3e4d2b4197774d42d
5b5cc6b3e4d2b4197774d42d- 112%false
- 212.5%true
- 313%false
- 413.5%false
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Answer : 2. "12.5%"
Explanation :
Answer: B) 12.5% Explanation: Here to convert 0.125 into % First convert to fractio Multiply and divide by 1000 => 0.125 x 10001000 = 1251000 = 18 => Now, in percentage18 x 100 = 12.5%