Quantitative Aptitude Practice Question and Answer
8Q: 125% as a Fraction? 1557 05b5cc6aae4d2b4197774cf7f
5b5cc6aae4d2b4197774cf7f- 11/4false
- 23/4false
- 35/4true
- 47/4false
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Answer : 3. "5/4"
Explanation :
Answer: C) 5/4 Explanation: Literally any percentage means divide by 100. So 125% = 125100. That can be reduced to 5/4. To convert to a decimal, you can do long division, dividing 5 into 4.
Q: A tank is filled in eight hours by three pipes K, L and M. Pipe K is twice as fast as pipe L, and L is twice as fast as M. How much time will pipe L alone take to fill the tank ? 1557 05b5cc6dfe4d2b4197774eaee
5b5cc6dfe4d2b4197774eaee- 132 hrsfalse
- 224 hrsfalse
- 328 hrstrue
- 426 hrsfalse
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Answer : 3. "28 hrs"
Explanation :
Answer: C) 28 hrs Explanation: 1/K + 1/L + 1/M = 1/8 (Given)Also given that K = 2L and L = 2M=> 1/2L + 1/L + 2/L = 1/8=> (1 + 2 + 4)/2L = 1/8=> 2L/7 = 8=> L = 28 hours.
Q: The price of a car is increased by 25%, by how much percent, must the new price of this car be decreased to restore its original price ? 1555 05b5cc6c5e4d2b4197774dda0
5b5cc6c5e4d2b4197774dda0- 120%true
- 224%false
- 321%false
- 425%false
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Answer : 1. "20%"
Explanation :
Answer: A) 20% Explanation: Suppose that the original price of the car = Rs. x Then new price of the car => (x) + (x ×25/100) = Rs. 5x/4 To restore the original price, the new price must be decreased by 5x/4 − x = x/4 So required percentage =(x/4)/(5x/4) × 100% = 20%
Q: 36 identical books must be arranged in rows with the same number of books in each row. Each row must contain at least three books and there must be at least three rows. A row is parallel to the front of the room. How many different arrangements are possible ? 1553 05b5cc6cfe4d2b4197774e2f4
5b5cc6cfe4d2b4197774e2f4- 15true
- 26false
- 37false
- 48false
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Answer : 1. "5"
Explanation :
Answer: A) 5 Explanation: The following arrangements satisfy all 3 conditions. Arrangement 1: 3 books in a row; 12 rows. Arrangement 2: 4 books in a row; 9 rows.Arrangement 3: 6 books in a row; 6 rows.Arrangement 4: 9 books in a row; 4 rows.Arrangement 5: 12 books in a row; 3 rows. Therefore, the possible arrangements are 5.
Q: There are 1650 students in a college. The difference between the number of boys and girls in the college is 400. What is the percentage of girls in the college ? 1552 05b5cc6c5e4d2b4197774dd1e
5b5cc6c5e4d2b4197774dd1e- 149false
- 234false
- 343false
- 438true
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Answer : 4. "38"
Explanation :
Answer: D) 38 Explanation: Let no. of boys be 'B' and no. of girls be 'G' Here from given data, B + G = 1650 .....(1) B - G = 400 .....(2) From (1) & (2), we get 2B = 2050 => B = 1025 => G = 1650 - 1025 = 625 Hence, the % of girls = 625 x 100/1650 => 38% (approx).
Q: Value of vehicle at end of each year depreciates at the rate of 3/5th of value at the beginning. If Initial value is 10,000Rs then at the end of three years its value is ? 1551 05b5cc715e4d2b4197774f472
5b5cc715e4d2b4197774f472- 1Rs. 6000false
- 2Rs. 3600false
- 3Rs. 2160true
- 4Rs. 415false
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Answer : 3. "Rs. 2160"
Explanation :
Answer: C) Rs. 2160 Explanation: End of first year : 10000 x (3/5) = Rs. 6000End of second year : 6000 x (3/5) = Rs. 3600End of third year : 3600 x (3/5) = Rs. 2160
Q: Area of a square and a rectangle are equal. If side of the square is 40 cm and length of the rectangle is 64 cm, what is the perimeter of the rectangle ? 1550 05b5cc6c2e4d2b4197774dbe1
5b5cc6c2e4d2b4197774dbe1- 1187 cmfalse
- 2178 cmtrue
- 3149 cmfalse
- 4194 cmfalse
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Answer : 2. "178 cm"
Explanation :
Answer: B) 178 cm Explanation: Area of square = 40 x 40 = 1600 sq.cm Given that the areas of Square and Rectangle are equal => Area of rectangle = 1600 Sq.cm We know that, Area of rectangle = L x B Given L = 64 cm Breadth of rectangle = 1600/64 = 25 cm Perimeter of the rectangle = 2(L + B) = 2(64+25) = 178 cm.
Q: A train is moving and crossing a man who is running on a platform of 100 m at a speed of 8 kmph in the direction of the train, in 9 sec. If the speed of the train is 74 kmph. Find the length of the train ? 1549 05b5cc6c3e4d2b4197774dc27
5b5cc6c3e4d2b4197774dc27- 1202 mtsfalse
- 2188 mtsfalse
- 3165 mtstrue
- 4156 mtsfalse
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Answer : 3. "165 mts"
Explanation :
Answer: C) 165 mts Explanation: Let the length of the train = L mts Relative speed of train and man = 74 - 8 = 66 kmph = 66 x 5/18 m/s => 66 x 5/18 = L/9 => L = 165 mts.

