Quantitative Aptitude Practice Question and Answer
8Q: If the given two numbers are respectively 7% and 28% of a third number, then what percentage is the first of the second ? 2193 05b5cc75ce4d2b4197774fc48
5b5cc75ce4d2b4197774fc48- 124%false
- 229%false
- 334%false
- 425%true
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Answer : 4. "25%"
Explanation :
Answer: D) 25% Explanation: Here, k = 7 and l = 28Therefore, first number = klx100 % of second number = 7/28 x 100% of second number = 25% of second number.
Q: One pipe can fill a tank three times as fast as another pipe. If together the two pipes can fill tank in 36 min, then the slower pipe alone will be able to fill the tank in ? 2192 05b5cc6f1e4d2b4197774ef3f
5b5cc6f1e4d2b4197774ef3f- 185 minfalse
- 292 minfalse
- 3187 minfalse
- 4144 mintrue
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Answer : 4. "144 min"
Explanation :
Answer: D) 144 min Explanation: Let the slower pipe alone fill the tank in x min. Then, faster pipe will fill it in x/3 min. 1/x + 3/x = 1/36 4/x = 1/36 => x = 144 min.
Q: Calculate the number of bricks, each measuring 25 cm x 15 cm x 8 cm required to construct a wall of dimensions 10 m x 4 cm x 6 m when 10% of its volume is occupied by mortar ? 2192 05b5cc6d8e4d2b4197774e76e
5b5cc6d8e4d2b4197774e76e- 1720true
- 2600false
- 3660false
- 46000false
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Answer : 1. "720"
Explanation :
Answer: A) 720 Explanation: Let the number of bricks be 'N' 10 x 4/100 x 6 x 90/100 = 25/100 x 15/100 x 8/100 x N 10 x 4 x 6 x 90 = 15 x 2 x N => N = 720.
Q: A sum of money becomes 7/6 of itself in 3 years at a certain rate of simple interest. The rate per annum is ? 2184 05b5cc6dfe4d2b4197774eacb
5b5cc6dfe4d2b4197774eacb- 145/7 %false
- 250/9 %true
- 351/7 %false
- 447/ 9 %false
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Answer : 2. "50/9 %"
Explanation :
Answer: B) 50/9 % Explanation: Let sum = S. Then, amount = 7S/6 S.I. = 7S/6 - S = S/6; Time = 3 years. Rate = (100 x S) / (S x 6 x 3) = 5 5/9 = 50/9 %.
Q: 28 Men and 52 women working together completes a work in 22.5 days. 35 men and 65 women working together on same work will complete it in how many days? 2182 05b5cc6bde4d2b4197774d93d
5b5cc6bde4d2b4197774d93d- 116false
- 218true
- 319false
- 421false
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Answer : 2. "18"
Explanation :
Answer: B) 18 Explanation: Clearly total persons are increased in 28/35 :: 52/65 = 4:5. As time is inversely proportional to men, so total time will decrease in the ratio 5:4. Hence, 22.5 x 4/5 = 18 days.
Q: Shamma lends Rs.40,000 to two of her friends. She gives Rs.24,000 to the first at 8% p.a. simple interest. Shamma wants to make a profit of 10% on the whole. The simple interest rate at which she should lend the remaining sum of money to the second friend is: 2180 05b5cc6b7e4d2b4197774d624
5b5cc6b7e4d2b4197774d624- 113%true
- 28.5%false
- 39.5%false
- 411.25%false
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Answer : 1. "13%"
Explanation :
Answer: A) 13% Explanation: The ratio of money she lended is 24000 : 16000 = 3 : 2 Let the rate of interest be R% 8% R% 10 3 : 2 R = 13%.
Q: Find the odd man out of the following number series? 22, 26, 42, 78, 142, 244 2179 05b5cc619e4d2b4197774b70a
5b5cc619e4d2b4197774b70a- 1244true
- 2142false
- 378false
- 442false
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Answer : 1. "244"
Explanation :
Answer: A) 244 Explanation: The given number series 22, 26, 42, 78, 142, 244 follows a pattern that, 2222 + 22 = 22 + 4 = 2626 + 42 = 26 + 16 = 4242 + 62 = 42 + 36 = 7878 + 82 = 78 + 64 = 142142 + 102 = 142 + 100 = 242 Hence, the odd one in the given number series is 244.
Q: If watches bought at prices ranging from Rs. 200 to Rs. 350 are sold at prices ranging from Rs. 300 to Rs. 425. What is the greatest possible profit that might be made in selling nine watches ? 2179 05b5cc75ce4d2b4197774fc89
5b5cc75ce4d2b4197774fc89- 1Rs. 1800false
- 2Rs. 2000false
- 3Rs. 2025true
- 4Rs. 1750false
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Answer : 3. "Rs. 2025"
Explanation :
Answer: C) Rs. 2025 Explanation: Profit would be maximum if watches are brought for Rs. 200 and sold for Rs. 425Profit = Rs. (425 - 200) = Rs. 225Profit of 9 watches = Rs. 225 x 9 = Rs.2,025.