Quantitative Aptitude Practice Question and Answer

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 ? 2419 0

  • 1
    Rs. 1800
    Correct
    Wrong
  • 2
    Rs. 2000
    Correct
    Wrong
  • 3
    Rs. 2025
    Correct
    Wrong
  • 4
    Rs. 1750
    Correct
    Wrong
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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.

Q: Find the next number in the given number series? 35, 36, 55, 111, ? 2418 0

  • 1
    278.5
    Correct
    Wrong
  • 2
    264.5
    Correct
    Wrong
  • 3
    212.5
    Correct
    Wrong
  • 4
    202
    Correct
    Wrong
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Answer : 1. "278.5"
Explanation :

Answer: A) 278.5 Explanation: The given number series is 35, 36, 55, 111, ? 35 35 x 1 + 1 = 36 36 x 1.5 + 1 = 55 55 x 2 + 1 = 111 111 x 2.5 + 1 = 278.5   Hence, the next number in the given number series is 278.5.

Q: Given that 100.48 = x,  100.70 = y and xz = y2,  then the value of z is close to ___ ? 2417 0

  • 1
    3.7
    Correct
    Wrong
  • 2
    2.7
    Correct
    Wrong
  • 3
    3.6
    Correct
    Wrong
  • 4
    2.9
    Correct
    Wrong
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Answer : 4. "2.9"
Explanation :

Answer: D) 2.9 Explanation: xz = y2        10(0.48z) = 10(2 x 0.70) = 101.40  0.48z = 1.40  z = 140/18 = 35/12 = 2.9 (approx.)

Q: 270 metre long train running at 10 km/hrs crosses another train running at 80 km/hrs. in 20 seconds Trains are running in opposite direction. Length of seconds train? 2417 0

  • 1
    240 metre
    Correct
    Wrong
  • 2
    320 metre
    Correct
    Wrong
  • 3
    260 metre
    Correct
    Wrong
  • 4
    230 metre
    Correct
    Wrong
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Answer : 4. "230 metre"

Q: The average age of a couple is 24 years when they were married five years ago but now the average age of the husband, wife and child is 20 years(the child was born during the interval). What is the present age of the child ? 2415 0

  • 1
    2 yrs
    Correct
    Wrong
  • 2
    4 yrs
    Correct
    Wrong
  • 3
    3 yrs
    Correct
    Wrong
  • 4
    5 yrs
    Correct
    Wrong
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Answer : 1. "2 yrs"
Explanation :

Answer: A) 2 yrs Explanation: 29 x 2 = 5820 x 3 = 60         -----------               2 years Therefore, the age of child is 2 years.

Q: Express 6.72 % in ratio ? 2413 0

  • 1
    65 : 124
    Correct
    Wrong
  • 2
    42 : 625
    Correct
    Wrong
  • 3
    21 : 125
    Correct
    Wrong
  • 4
    37 : 442
    Correct
    Wrong
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Answer : 2. "42 : 625"
Explanation :

Answer: B) 42 : 625 Explanation: 6.72/100 = 672/10000 = 42/625

Q: Madhu started a business and he invested in 76000, After some month, Amar came to join with him and invest 57000.The end of the year the total profit was divided among them into ratio form 2 : 1.Find after how many months Amar join. 2411 0

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

Answer: D) 4 months Explanation: we can assume that Amar join into business after x months. So Amar money was invest into  (12 – x ) months.   76000×1257000×(12-x)=21   --> 912000 = 114000 ( 12 – x ) = 114 ( 12 – x ) = 912 --> x = 4 After 4 months amar join the business.

Q: What is the equivalent compound ratio of 5:6::7:10::6:5  ? 2410 0

  • 1
    7 : 9
    Correct
    Wrong
  • 2
    9 : 7
    Correct
    Wrong
  • 3
    7 : 4
    Correct
    Wrong
  • 4
    7 : 10
    Correct
    Wrong
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Answer : 4. "7 : 10"
Explanation :

Answer: D) 7 : 10 Explanation: Given 5:6 :: 7:10 :: 6:5 We know that compound ratio is calculated as a:b :: c:d :: e:f(axcxe):(bxdxf) => (5x7x6):(6x10x5)=> (210):(300)= 7:10

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