Quantitative Aptitude Practice Question and Answer
8Q: Priya can do a work in 16 days. In how many days will the work be completed by Sai, if the efficiency of Sai is 60% more than that of Priya ? 1420 05b5cc6c7e4d2b4197774deaf
5b5cc6c7e4d2b4197774deaf- 18 daysfalse
- 212 daysfalse
- 314 daysfalse
- 410 daystrue
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Answer : 4. "10 days"
Explanation :
Answer: D) 10 days Explanation: Ratio of efficiencies of Priya and Sai is Sai : Priya = 160 : 100 = 8 : 5 Given Priya completes the work in 16 days Let number of days Sai completes the work be 'd' => 5×16 = 8×d d = 10 days. Therefore, number of days Sai completes the work is 10 days.
Q: A merchant commences with a certain capital and gains annually at the rate of 30 per cent. At the end of 2 years he has worth Rs 10,000. What was the original capital? 1418 05b5cc6abe4d2b4197774cfb2
5b5cc6abe4d2b4197774cfb2- 1Rs. 4987false
- 2Rs. 5148false
- 3Rs. 5917true
- 4Rs. 6254false
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Answer : 3. "Rs. 5917"
Explanation :
Answer: C) Rs. 5917 Explanation: Let the Original capital amount be Rs. P Given after 2 years the amount is Rs. 10000 Rate of interest = 30% According to the question, P x 130100 x 130100 = 10000=> P = 1000000169 = 5917 Therefore, the capital amount P = Rs. 5917
Q: About 4 out of 5 students are left handed. If there are totally 40 students in an class. How many would be left handed ? 1418 05b5cc705e4d2b4197774f220
5b5cc705e4d2b4197774f220- 140false
- 245false
- 332true
- 430false
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Answer : 3. "32"
Explanation :
Answer: C) 32 Explanation: Probability of left handed = 4/5total student = 40total left handed = 40 x(4/5)= 32
Q: At what rate percent on simple interest will Rs.415 amount to Rs.514 in 4 years ? 1418 05b5cc6d6e4d2b4197774e656
5b5cc6d6e4d2b4197774e656- 14.58 %false
- 25.96 %true
- 36.52 %false
- 44.98 %false
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Answer : 2. "5.96 %"
Explanation :
Answer: B) 5.96 % Explanation: Difference in amount = 514 - 415 = 99 99 = (415 x 4 x R)/100 R = 5.96%
Q: A motorboat running upstream takes 8 hours 48 minutes to cover a certain distance, while it takes 4 hours to cover the same distance running downstream. What is the ratio between the speed of the motorboat and speed of the water current respectively? 1417 05b5cc6bde4d2b4197774d91a
5b5cc6bde4d2b4197774d91a- 13:7false
- 27:9false
- 35:4false
- 48:3true
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Answer : 4. "8:3"
Explanation :
Answer: D) 8:3 Explanation: Let the man's rate upstream be x kmph and that downstream be y kmph. Then, distance covered upstream in 8 hrs 48 min = Distance covered downstream in 4 hrs. x x 8 4 = (y x 4) 5 44 x =4y 5 y = 11 x. 5 Required ratio = y + x : y - x 2 2 = 16x x 1 : 6x x 1 5 2 5 2 = 8 : 3 5 5 = 8 : 3.
Q: A person's present age is two-fifth of the age of his mother. After 8 years, he will be one-half of the age of his mother. How old is the mother at present ? 1416 05b5cc6dce4d2b4197774e983
5b5cc6dce4d2b4197774e983- 136 yrsfalse
- 238 yrsfalse
- 340 yrstrue
- 442 yrsfalse
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Answer : 3. "40 yrs"
Explanation :
Answer: C) 40 yrs Explanation: Let the mother's present age be x years. Then, the person's present age = 2/5 x years. (2x/5 + 8) = 1/2 (x + 8) 2(2x + 40) = 5(x + 8) => x = 40.
Q: A train running at the speed of 40 km/hr crosses a signal pole in 9 seconds. Find the length of the train ? 1413 05b5cc76fe4d2b4197774ff4e
5b5cc76fe4d2b4197774ff4e- 190 mtsfalse
- 2150 mtsfalse
- 3120 mtsfalse
- 4100 mtstrue
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Answer : 4. "100 mts"
Explanation :
Answer: D) 100 mts Explanation: We know that Speed=distancetime distance= speed * time ⇒ d=40×518×9 d= 100 mts.
Q: Sreya bought a plot for Rs. 6,00,000, then sold half of the plot at 10 % profit and rest at 15% profit. What is the total profit % that Sreya gain? 1413 05b5cc6bfe4d2b4197774da65
5b5cc6bfe4d2b4197774da65- 113.8 %false
- 211.4 %false
- 312.5 %true
- 414.5 %false
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Answer : 3. "12.5 %"
Explanation :
Answer: C) 12.5 % Explanation: 10% profit at half plot = 600000/2 x 10/100 = Rs. 30,000 15% profit at remaining half plot = 600000/2 x 15/100 = Rs. 45,000 Now, total profit = 30000 + 45000 = 75000 Profit % = 75000/600000 x 100 = 12.5 %