Quantitative Aptitude Practice Question and Answer

Q: In an old Palace there are 50 stairs to go on top floor. Each is 20 cm high, 30 cm wide and 60 cm long. If all the stairs are re-plastered at the rate of Rs. 4 per 100 sq.cm. What is the expenditure ? 1875 0

  • 1
    Rs. 4680
    Correct
    Wrong
  • 2
    Rs. 7600
    Correct
    Wrong
  • 3
    Rs. 6000
    Correct
    Wrong
  • 4
    Rs. 5480
    Correct
    Wrong
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Answer : 3. "Rs. 6000"
Explanation :

Answer: C) Rs. 6000 Explanation: Total are of all stairs = 50 (20x60 + 30x60) = 50 (1200 + 1800) = 50 x 3000 = 150000 sq cm. Given rate of 100 sq cm = Rs. 4 Then for 150000 sq. cm = ? => 4 x 150000/100 = Rs. 6000

Q: Sriram was conducting an experiment in which the average of 11 observations came to be 92, while the average of first five observations was 89, and that of the last five was 86. What was the measure of the 6th observation ? 1874 0

  • 1
    134
    Correct
    Wrong
  • 2
    137
    Correct
    Wrong
  • 3
    139
    Correct
    Wrong
  • 4
    141
    Correct
    Wrong
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Answer : 2. "137"
Explanation :

Answer: B) 137 Explanation: This can be done as,   (11 × 92)  -  (5 × 89)  -  (5 × 86)    = 1012- 445 - 430 = 137

Q: Tickets numbered 1 to 20 are mixed up and then a ticket is drawn at random. What is the probability that the ticket drawn has a number which is a multiple of 3 or 5 ? 1873 0

  • 1
    2/3
    Correct
    Wrong
  • 2
    1/2
    Correct
    Wrong
  • 3
    7/8
    Correct
    Wrong
  • 4
    4/5
    Correct
    Wrong
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Answer : 2. "1/2"
Explanation :

Answer: B) 1/2 Explanation: Multiples of 3 below 20 are 3, 6, 9, 12, 15, 18 Multiples of 5 below 20 are 5, 10, 15, 20 Required number of possibilities = 10Total number of possibilities = 20Required probability = 10/20 = 1/2.

Q: 'K' cycled from A to B at 10 kmph and returned at the rate of 9 kmph. 'L' cycled both ways at 12 kmph. In the whole journey 'L' took 10 minutes less than 'K'. Find the distance between A and B ? 1873 0

  • 1
    32.1 km
    Correct
    Wrong
  • 2
    15.23 km
    Correct
    Wrong
  • 3
    3.75 km
    Correct
    Wrong
  • 4
    32.1 m
    Correct
    Wrong
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Answer : 3. "3.75 km"
Explanation :

Answer: C) 3.75 km Explanation: Let 'd' be the distance between A and BK -time = d/10 + d/9 = 19d/90 hoursL -time = 2d/12 = d/6 hoursWe know that, 10 min = 1/6 hoursThus, time difference between K and L is given as 10 minutes. => 19d/90 - d/6 = 1/6=> (19d-15d)/90 = 1/6=> 4d/90 = 1/6Thus,d= 15/4 km = 3.75 km. hence the distance between A and B is 3.75 km.

Q: 5% of 40,000 is 1872 0

  • 1
    20000
    Correct
    Wrong
  • 2
    2000
    Correct
    Wrong
  • 3
    200
    Correct
    Wrong
  • 4
    20
    Correct
    Wrong
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Answer : 2. "2000"
Explanation :

Answer: B) 2000 Explanation: 5% of 40,000  = 5100 × 40,000 = 5 × 400 = 2,000     Hence, 5% of 40,000 = 2,000.

Q: A cuboid of dimension 24cm x 9cm x 8 cm is melted and smaller cubers are of side 3 cm is formed.find how many such cubes can be formed ? 1872 0

  • 1
    64
    Correct
    Wrong
  • 2
    56
    Correct
    Wrong
  • 3
    48
    Correct
    Wrong
  • 4
    40
    Correct
    Wrong
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Answer : 1. "64"
Explanation :

Answer: A) 64 Explanation: Volume of cuboid = (24 x 9 x 8) cm = 1728 cu.cmVolume of small cube = (3 x 3 x 3) cm = 27 cu.cm So, No. of small cubes formed = 1728/27 = 64.

Q: Mohan spends 23% of an amount of money on an insurance policy, 33% on food, 19% on children’s education and 16% on recreation. He deposits the remaining amount of Rs. 504 in bank. How much amount does he spend on food and insurance policy together? 1871 0

  • 1
    Rs. 2326
    Correct
    Wrong
  • 2
    Rs. 5876
    Correct
    Wrong
  • 3
    Rs. 1741
    Correct
    Wrong
  • 4
    Rs. 3136
    Correct
    Wrong
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Answer : 4. "Rs. 3136"
Explanation :

Answer: D) Rs. 3136 Explanation: Let total amount = Rs. P Total expenditure = (23 + 33 + 19 + 16)% of P = 91%ofP Remaining money = (100 - 91)% of P = 9% of P But given in the question that, 9% of P = 504 9p/100 = 504 => P = 50400/9 => P = Rs. 5600   Required money spent on Food & Insurance = 23 + 33 % = 56% of 5600 = 56 x 5600/100 = 56 x 56 = Rs. 3136

Q: On retirement, a woman gets Rs. 1,45,440 of her provident fund which she invests in a scheme at 20% per annum. Her monthly income from this scheme will be 1868 0

  • 1
    Rs. 2550
    Correct
    Wrong
  • 2
    Rs. 2424
    Correct
    Wrong
  • 3
    Rs. 2224
    Correct
    Wrong
  • 4
    Rs. 2380
    Correct
    Wrong
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Answer : 2. "Rs. 2424"
Explanation :

Answer: B) Rs. 2424 Explanation: Now, the principal amount P = Rs. 1,45,440 Rate of interest R = 20%/annum Now monthly income I = PTR/100 = 1,45,440 x 20 x 1/100 x 12 = 2908800/1200 = Rs. 2424.   Hence, her monthly income = Rs. 2424.

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