Quantitative Aptitude प्रश्न और उत्तर का अभ्यास करें

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? 1731 0

  • 1
    58 l
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  • 2
    65 l
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  • 3
    50 l
    सही
    गलत
  • 4
    62 l
    सही
    गलत
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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: Mr. X sold two properties P1 and P2 for Rs 1,00,000 each. He sold property P1 for 20% less than what he paid for it. What is the percentage of profit of property P2, so that he is not in gain or loss on the sale of two properties? 1727 0

  • 1
    33.33%
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  • 2
    29.97%
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  • 3
    25%
    सही
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  • 4
    22.22%
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    गलत
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उत्तर : 1. "33.33%"
व्याख्या :

Answer: A) 33.33% Explanation: Let 'A' be the cost price of property P1. Then from the given data, the selling price of P1 = Rs. 1,00,000 He got 20% loss on selling P1 ⇒A - 20A100 = 100000⇒A = 1,25,000 Therefore, the amount he lossed on selling P1 = 25,000 As ge he got no loss or gain on sale of P1 and P2, the gain on selling P2 = 25,000 But the selling price of P2 = 1,00,000 => Cost price of P2 = 75,000   Hence, the profit percentage on P2 = GainCPx 100 = 2500075000x100 = 1003= 33.33%

प्र: There is sufficient salary to give K for 10 days and L for 15 days. Then how many days will the money last if both has to be given the salary ? 1726 0

  • 1
    6 days
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  • 2
    12 days
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  • 3
    4 days
    सही
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  • 4
    9 days
    सही
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उत्तर : 1. "6 days"
व्याख्या :

Answer: A) 6 days Explanation: K's 1 day's salary = 1/10 L's 1 day's salary = 1/15 Together their 1 day's salary = 1/10 + 1/15 = 3/30 + 2/30 = 5/30 = 1/6 So the money will be enough for paying them both for 6 days.

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 ? 1726 0

  • 1
    175
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  • 2
    345
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  • 3
    265
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  • 4
    300
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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: The simple interest on a sum of money will be Rs.600 after 10 years. If the principal is trebled after 5 years what will be the total interest at the end of the tenth year ? 1723 0

  • 1
    Rs. 1100
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  • 2
    Rs. 1200
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  • 3
    Rs. 1000
    सही
    गलत
  • 4
    Rs. 1840
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उत्तर : 2. "Rs. 1200"
व्याख्या :

Answer: B) Rs. 1200 Explanation: P --- 10 ----- 600    P --- 5 ----- 300 3P --- 5 ----- 900                __________                   1200

प्र: What is the probability that a leap year has 53 Saturdays and 52 Sundays ? 1722 0

  • 1
    1/7
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  • 2
    2/7
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  • 3
    1/2
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    गलत
  • 4
    3/2
    सही
    गलत
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उत्तर : 1. "1/7"
व्याख्या :

Answer: A) 1/7 Explanation: A leap year has 52 weeks and two daysTotal number of cases = 7Number of favourable cases = 1i.e., {Friday, Saturday} Required Probability = 1/7

प्र: 20 men went to a restaurant. Ninteen of them paid Rs.70 each and the twentieth man paid Rs.90.25 more than the average of all the 20 men. What is the total bill ? 1722 0

  • 1
    Rs. 1495
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  • 2
    Rs. 548
    सही
    गलत
  • 3
    Rs. 850
    सही
    गलत
  • 4
    Rs. 1750
    सही
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उत्तर : 1. "Rs. 1495"
व्याख्या :

Answer: A) Rs. 1495 Explanation: Let the average bill paid by twenty members = 'x' But 19 men paid each = Rs. 70 20th man paid Rs. 90.25 more than the avg bill of 20 = x + 90.25 20x = 19(70) + x + 90.2519x = 1330 + 90.2519x = 1420.25x = 1420.25/19 = Rs. 74.75 But the total bill = 20 x 74.75 = Rs. 1495.

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