Quantitative Aptitude प्रश्न और उत्तर का अभ्यास करें

प्र: A and B invests Rs.10000 each, A investing for 8 months and B investing for all the 12 months in the year. If the total profit at the end of the year is Rs.25000, find their shares? 3358 0

  • 1
    10000 and 15000
    सही
    गलत
  • 2
    15000 and 10000
    सही
    गलत
  • 3
    5000 and 20000
    सही
    गलत
  • 4
    20000 and 5000
    सही
    गलत
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उत्तर : 1. "10000 and 15000"
व्याख्या :

Answer: A) 10000 and 15000 Explanation: As both A and B invest the same amounts, the ratio of their profits at the end of the year is equal to the ratio of the time periods for which they have invested.   Thus, the required ratio of their profits = A : B = 8 : 12 = 2 : 3.   Hence, share of A in the total profit = 2 x 25000/5 = Rs.10000   Similarly, share of B in the total profit = 3 x 25000/5 = Rs.15000

प्र: An accurate clock shows 7 o'clock in the morning. Through how may degrees will the hour hand rotate when the clock shows 3 o'clock in the afternoon? 3350 0

  • 1
    144º
    सही
    गलत
  • 2
    168º
    सही
    गलत
  • 3
    180º
    सही
    गलत
  • 4
    150º
    सही
    गलत
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उत्तर : 3. "180º"
व्याख्या :

Answer: C) 180º Explanation: Angle traced by the hour hand in 6 hours =360o12×6 = 180o.

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उत्तर : 4. "10,500"
व्याख्या :

Answer: D) 10,500 Explanation: The ratio of their investments:50000x36 : 80000x30 = 3 : 4Simran's share of profit = (24500x3/7) = Rs.10,500.

प्र: The salary of Mr. X is 30% more than that of Mr. Y . Find what percent of Mr. Y’s salary is less than Mr. X’s ? 3334 0

  • 1
    24%
    सही
    गलत
  • 2
    23 1/3%
    सही
    गलत
  • 3
    25 1/2%
    सही
    गलत
  • 4
    22 8/9 %
    सही
    गलत
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उत्तर : 2. "23 1/3%"
व्याख्या :

Answer: B) 23 1/3% Explanation: y=100 x=130 130---------30100---------? => 23 1/3%

प्र: Ten years ago, Kumar was thrice as old as Sailesh was but 10 years hence, he will be only twice as old. Find Kumar’s present age ? 3311 0

  • 1
    50 years
    सही
    गलत
  • 2
    70 years
    सही
    गलत
  • 3
    60 years
    सही
    गलत
  • 4
    40 years
    सही
    गलत
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उत्तर : 2. "70 years"
व्याख्या :

Answer: B) 70 years Explanation: Let Kumar’s present age be "x" years and Sailesh’s present age be "y" years.Then, according to the first condition, x - 10 = 3(y - 10) => x - 3y = - 20 ........(1) Now, Kumar’s age after 10 years = (x + 10) years. Sailesh’s age after 10 years = (y + 10) years. (x + 10) = 2 (y + 10)  => x - 2y = 10 ......(2)   Solving (1) and (2), we get x = 70 and y = 30 Kumar’s present age = 70 years    and  Sailesh’s present age = 30 years.

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उत्तर : 4. "149600 kgs"
व्याख्या :

Answer: D) 149600 kgs Explanation: Let the total quantity of gold be p kgs. According to the question, 50% of p + 25% of p + 12.5% of p = 130900 87.5% of p = 130900 p = 130900 x 100/87.5  = 149600 kgs.   Therefore, the initial gold quantity that king has = p = 149600 kgs.

प्र: 5 years ago Sushma was 5 times as old as her Son. 5 years hence her age will be 8 less than three times the corresponding age of her Son. Find their ages ? 3299 0

  • 1
    24 and 13 years
    सही
    गलत
  • 2
    48 and 24 years
    सही
    गलत
  • 3
    35 and 11 years
    सही
    गलत
  • 4
    33 and 15 years
    सही
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उत्तर : 3. "35 and 11 years"
व्याख्या :

Answer: C) 35 and 11 years Explanation: Let the age of sushma be x and the age of her son is yThen five years before x-5=5(y-5) ...(1)Five years hence x+5 = 3(y+5)-8 .....(2) By soving (1) & (2), we get5y - 15 = 3y + 7y = 11 => x = 35 Therefore, the age of Sushma = 35 and her son = 11.

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