Mixed Quantitative Aptitude Questions Set 146

Directions(1-5): What will be the value of question mark '?' in the following questions.

1. (13)^54 * (13)^(-51) = (169)^2 * ?
   14^-1
   13^1
   13^2
   13^-1
   10^-1
   Option D
   (13)^54 * (13)^(-51) = (169)^2 * ?
   ? = 13^(54-51)/13^4 = 13^-1
   
   
    



2. 74156 – ? – 321 – 20 + 520 = 69894
   5460
   4000
   4530
   4441
   4550
   Option D
   74156 – ? – 321 – 20 + 520 = 69894
   ? = 74676 – 69894 – 341
   = 4441
   
   
    



3. 6573 ÷ 21 × (0.2)^2 =?
   12.52
   13.31
   15.50
   11.22
   10.05
   Option A
   6573 ÷ 21 × (0.2)^2 =?
   ? = 6573 * 0.04/21
   = 12.52
   
   
    



4. 748 × ? × 9 = 861696
   100
   128
   145
   120
   133
   Option B
   748 × ? × 9 = 861696
   => ? =861696/748 * 9
   => ? = 128
   
   
    



5. 2115 ÷ ? = 94 × 15
   1.2
   1.4
   1.3
   1.5
   1.6
   Option D
   2115 ÷ ? = 94 × 15
   ? = 2115/(94 * 15)
   =>? = 1.5
   
   
    



6. Ramesh has 20% savings with him from his monthly salary. If expenditure on clothing is 25% of overall expenditure and his total expenditure except clothing is 3600 then find his saving.
   1300
   1600
   1400
   1200
   1500
   Option D
   Total expenditure = 80% of salary
   Expenditure excluding clothing
   = 80% - 25/100*80%
   = 60% savings
   Savings = 3600/60*20 = Rs.1200
   
   
   
   
    



7. A grocer purchased 2 kg. of rice at the rate of Rs 15 per kg. and 3 kg. of rice at the rate of Rs 13 per kg. At what price per kg. Should he sell the mixture to earn 33(1/3)% profit on the cost price.
   Rs.16.25
   Rs.14.40
   Rs.13.35
   Rs.12.12
   Rs.18.40
   Option E
   CP of mixture = 15*2+13*3/5 = 69/5 Rs. per kg
   SP = [69/5*400/3]/100 = Rs.18.40
   
   
    



8. An article is sold at a loss of 10%. Had it been sold for 9 more,there would have been a gain of 12.5% on it, then what is the cost price of the article?
   45
   33
   40
   42
   48
   Option C
   (12.5 + 10) → 9
   Acc. To question.
   (12.5 + 10) → 9
   => 1 -> 9/22.5
   =>100 -> 9000/225
   Rs. 40
   
   
    



9. The income of A is 150% of the income of B and the income of C is 120% of the income of A. If the total income of A, B and C together is Rs 86,000, what is C’s income?
   30000
   43500
   45660
   36000
   35670
   Option D
   Ratio of income of
   A:B:C= 15:10:18
   so, 15x+ 10x+ 18x = 86000
   x =2000
   C’s income= 18 * 2000 = 36000
   
   
    



10. An orange vendor makes a profit of 20% by selling oranges at a certain price. If he charges Rs 1.2 higher per orange he would gain 40%. Find the original price at which he sold an orange.
    6.6
    8.1
    7.2
    8.9
    7.7
    Option C
    Increment in Profit is due to extra charges on Orange
    i.e.
    20% ----- 1.2
    100% ----- 1.2 * 5
    C.P. = Rs 6
    S.P. = 6 * 1.2 = Rs 7.2