Quantitative Aptitude Practice Question and Answer
8Q: 74.99% of 1299 + 8.98% of 1899 = ? 1662 05b5cc6b0e4d2b4197774d2b2
5b5cc6b0e4d2b4197774d2b2- 11378false
- 21301false
- 31212true
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Answer : 3. "1212"
Explanation :
Answer: C) 1212 Explanation: 74.99% of 1299 + 8.98% of 1899 = ? ? = 75 x 1400100 + 9 x 1800100 ? = 1050 + 162? = 1212.
Q: 100 percent of which number is 20? 1530 05b5cc6b0e4d2b4197774d28d
5b5cc6b0e4d2b4197774d28d- 1100false
- 2500false
- 320true
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Answer : 3. "20"
Explanation :
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.
Q: If sum of upstream and downstream speed of a boat is 82 kmph, and the boat travels 105 km. upstream in 3 hr, Find the time taken by boat to cover 126 km downstream. 1990 05b5cc6afe4d2b4197774d278
5b5cc6afe4d2b4197774d278- 12.8 hrsfalse
- 22.7 hrstrue
- 32.6 hrsfalse
- 42.5 hrsfalse
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Answer : 2. "2.7 hrs"
Explanation :
Answer: B) 2.7 hrs Explanation: Let Speed of boat in still water = b Let Speed of still water = w Then we know that, Speed of Upstream = U = boat - water Speed of Downstream = D = boat + water Given, U + D = 82 b - w + b + w = 82 2b = 82 => b = 41 kmph From the given data, 41 - w = 105/3 = 35 w = 6 kmph Now, b + w = 126/t => 41 + 6 = 126/t => t = 126/47 = 2.68 hrs.
Q: The difference between simple interest and compound interest of a certain sum of money at 20% per annum for 2 years is Rs. 56. Then the sum is : 1654 05b5cc6afe4d2b4197774d269
5b5cc6afe4d2b4197774d269- 1Rs. 3680false
- 2Rs. 2650false
- 3Rs. 1400true
- 4Rs. 1170false
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Answer : 3. "Rs. 1400"
Explanation :
Answer: C) Rs. 1400 Explanation: We know thatThe Difference between Compound Interest and Simple Interest for n years at R rate of interest is given by C.In - S.In = PR100n Here n = 2 years, R = 20%, C.I - S.I = 56 56 = P201002=> P = 56 x 52=> P = 56 x 25=> P = Rs. 1400
Q: Find the missing number? 15, 30, ? , 40, 8, 48 6969 05b5cc6afe4d2b4197774d264
5b5cc6afe4d2b4197774d264- 121false
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Answer : 4. "10"
Explanation :
Answer: D) 10 Explanation: Given nuber series is 15, 30, ? , 40, 8, 48 Here the number series follows a pattern that 15 15 x 2 = 30 30 ÷ 3 = 10 10 x 4 = 40 40 ÷ 5 = 8 8 x 6 = 48 Hence, the missing number in the series is 10.
Q: A man pays Rs. 6.40 per litre of milk. He adds water and sells the mixture at Rs. 8 per litre, thereby making 37.5% profit. The proportion of water to milk received by the customers is 1403 05b5cc6afe4d2b4197774d25e
5b5cc6afe4d2b4197774d25e- 11 : 10true
- 210 : 1false
- 39 : 11false
- 411 : 9false
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Answer : 1. "1 : 10"
Explanation :
Answer: A) 1 : 10 Explanation: Customer ratio of Milk and Water is given by Milk :: Water 6.4 0 81 + 38 =6411 6411 6410 - 6411 => Milk : Water = 110 : 11 = 10 : 1 Therefore, the proportionate of Water to Milk for Customer is 1 : 10
Q: Find the sum of the Arithmetic Series upto 36 terms 2, 5, 8, 11,... 1675 15b5cc6afe4d2b4197774d259
5b5cc6afe4d2b4197774d259- 13924false
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Answer : 2. "1962"
Explanation :
Answer: B) 1962 Explanation: Arithmetic Series :: An Arithmetic Series is a series of numbers in which each term increases by a constant amount. How to find the sum of the Arithmetic Sequence or Series for the given Series :: When the series contains a large amount of numbers, its impractical to add manually. You can quickly find the sum of any arithmetic sequence by multiplying the average of the first and last term by the number of terms in the sequence. That is given by Sn = n(a1 + an)2 Where n = number of terms, a1 = first term, an = last term Here Last term is given by an = a1 + n-1d where d = common difference Now given Arithmetic Series is 2, 5, 8, 11,... Here a1 = 2, d = 3, n = 36 Now, an= a1 + n - 1d a36= 2 + 36 - 13 = 105 + 2 = 107 Now, Sum to 36 terms is given by S36 = 36(2 + 107)2 = 36 x 1092 = 39242 = 1962 Therefore, Sum to 36 terms of the series 2, 5, 8, 11,... is 1962.
Q: How many weekends in a year? 1379 05b5cc6afe4d2b4197774d244
5b5cc6afe4d2b4197774d244- 152false
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Answer : 4. "104"
Explanation :
Answer: D) 104 Explanation: In normal we have 104 Weekend Days. We know that a Each normal year has 365 days or 52 weeks plus one day, and each week has two weekend days, which means there are approximately 104 weekend days each year. Whereas in a leap year we have 366 days it adds one more day to the year. And what makes the change is the starting day of the year.

