Quantitative Aptitude प्रश्न और उत्तर का अभ्यास करें

प्र: The ratio of investments of two partners A and B is 7:5 and the ratio of their profits is 7:10. If A invested the money for 5 months, find for how much time did B invest the money ? 1723 0

  • 1
    11 months
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  • 2
    9 months
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  • 3
    7 months
    सही
    गलत
  • 4
    10 months
    सही
    गलत
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उत्तर : 4. "10 months"
व्याख्या :

Answer: D) 10 months Explanation: 7x5: 5xk = 7:10k = 10 months

प्र: What profit percent is made by selling an article at a certain price, if by selling at 2/3rd of that price, there would be a loss of 20%   ? 1722 0

  • 1
    30 %
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  • 2
    25 %
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  • 3
    15 %
    सही
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  • 4
    20 %
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उत्तर : 4. "20 %"
व्याख्या :

Answer: D) 20 % Explanation: SP2 = 2/3 SP1CP = 100SP2 = 802/3 SP1 = 80 SP1 = 120100 --- 20   => 20%

प्र: Kalyan purchased a Maruti van for Rs. 1,96,000 and the rate of depreciation is 14(2/7) % per annum. Find the value of the van after two years ? 1721 0

  • 1
    Rs. 1,24,000
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  • 2
    Rs. 1,44,000
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  • 3
    Rs. 1,32,000
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    गलत
  • 4
    Rs. 1,62,000
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उत्तर : 2. "Rs. 1,44,000"
व्याख्या :

Answer: B) Rs. 1,44,000 Explanation: Value of Maruti Van, V1 = Rs. 1,96,000Rate of depreciation, r = 14(2/7)% = 100/7%; Time, t = 2 yearsLet V2 is the value after depreciation. V2 = V11 - r100tV2 = 196001 - 10071002 V2 = 196000(6/7)(6/7) V2 = (196000x36)/49 = Rs. 1,44,000.

प्र: 7 years ago, the ratio of the ages of Anirudh to that of Bhavana, was 7:9. Chandhu is 12 years older than Anirudh and 12 years younger than Bhavana. What is Chandhu's present age? 1720 0

  • 1
    91 years
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  • 2
    115 years
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  • 3
    103 years
    सही
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  • 4
    Can't be determined
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उत्तर : 3. "103 years"
व्याख्या :

Answer: C) 103 years Explanation: Let present Anirudh's age be 'A' and Bhavana's age be 'B' Given seven years, their ratio is 7:9 => A-7 : B-7 = 7 : 9 => 9A - 7B = 14 .......(1) And given, Chandhu is 12 years older than A nad 12 years younger than B => C = A + 12....(2) => B = C + 12 => B = A + 12 + 12 .....(From (2)) => B = A + 24 ....(3) Put (3) in (1) 9A - 7(A+24) = 14 9A - 7A - 168 = 14 2A = 182 => A = 91 years => C = A + 12 = 91 +12 = 103 years.

प्र: A tin a mixture of two liquids A and B in the proportion 4 : 1. If 45 litres of the mixture is replaced by 45 litres of liquid B, then the ratio of the two liquids becomes 2 : 5. How much of the liquid B was there in the tin? What quantity does the tin hold? 1718 0

  • 1
    58 l
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  • 2
    65 l
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  • 3
    50 l
    सही
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  • 4
    62 l
    सही
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उत्तर : 3. "50 l"
व्याख्या :

Answer: C) 50 l Explanation: Let the tin contain 5x litres of liquids 5x - 45 x 455x - 45 x 15 + 45 = 25 => 5(4x - 36) = 2(x + 36) => 20x - 180 = 2x + 72 => x = 14 litres Hence, the initial quantity of mixture = 70l Quantity of liquid B = 70 - 45 x 15 + 45  = 50 litres.

प्र: A store owner is packing books into larger boxes that measure 25 by 42 by 60 inches. If the measurement of each book is 7 by 6 by 5 inches, then how many books can be placed in the box ? 1716 0

  • 1
    175
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  • 2
    345
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  • 3
    265
    सही
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  • 4
    300
    सही
    गलत
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उत्तर : 4. "300"
व्याख्या :

Answer: D) 300 Explanation: Number of books that can be placed in the larger box is given by Volume of Box / Volume of book.Now, n = 25 x 42 x 60 / 7 x 6 x 5 = 63000 / 210 = 300.Therefore, 300 books can be in that box.

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उत्तर : 2. "23"
व्याख्या :

Answer: B) 23 Explanation: If he wants to give these books equally to 2 of his friends, then 1 book will remain, it means possible number of books = 15,17,19,21,23,25,27,29If he wants to give these books equally to 3 of his friends, then 2 books will remain, it means possible number of books = 17,20,23,26,29If he wants to give these books equally to 4 of his friends, then 3 book will remain, it means possible number of books = 15,19,23,27common number is only 23 so it will be answer

प्र: Find the odd man out in the following number series? 71, 88, 113, 150, 203, 277 1712 0

  • 1
    277
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  • 2
    203
    सही
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  • 3
    150
    सही
    गलत
  • 4
    113
    सही
    गलत
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उत्तर : 1. "277"
व्याख्या :

Answer: A) 277 Explanation: The given number series is    71      88       113       150       203          277    +17    +25       +37      +53        +74         +8      +12        +16       +21             +4          +4         +5   The series should be  71  88  112   150    203   276 i.e, the differences of the difference should be +4.   Hence, the odd man in the given series is 277.

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