Mixed Quantitative Aptitude Questions Set 131

Directions(1-5): What approximate value will come in place of question mark ‘?’ in the following questions.

  1. [30% ๐‘œ๐‘“ {(80% ๐‘œ๐‘“ 850) รท 34}] = ?
    11
    9
    8
    6
    14
    Option D
    [30% ๐‘œ๐‘“ {(80% ๐‘œ๐‘“ 850) รท 34}] = ?
    ? = [ 30/100 ร— {( 80/100 ร— 850) รท 34}] = [ 30/100 ร— {680 รท 34}] = [ 30/100 ร— 20] = 6

     

  2. 65% ๐‘œ๐‘“ 240+ ?% ๐‘œ๐‘“ 150 = 210
    40
    36
    44
    58
    52
    Option B
    65% ๐‘œ๐‘“ 240+ ?% ๐‘œ๐‘“ 150 = 210
    =65/100 ๐‘œ๐‘“ 240 + ?/100 ๐‘œ๐‘“ 150 = 210
    โ‡’ 156 + 1.5 ร—? = 210
    =>? = (210โˆ’156)/1.5 = 36

     

  3. ? % of 800 = 293 โ€“ 22% of 750
    20
    18
    10
    16
    12
    Option D
    ? % of 800 = 293 โ€“ 22% of 750
    =>800 ร—? /100 = 293 โ€“ (750 ร— 22)/100
    โ‡’ 8 ร— ? = 293 โˆ’ 165 = 128
    โ‡’ ? = 128/8 = 16

     

  4. 1425 + 8560 + 1680 รท 200 = ?
    9993
    9120
    9003
    9191
    9009
    Option A
    1425 + 8560 + 1680 รท 200 = ?
    => ? = 1425 + 8560 + 1680 รท 200
    = 1425 + 8560 + 1680 200
    = 9985 + 8.4 = 9993.4 == 9993

     

  5. 555.05 + 55.50 + 5.55 + 5 + 0.55 = ?
    660
    622
    600
    616
    624
    Option B
    555.05 + 55.50 + 5.55 + 5 + 0.55 = ?
    => ? = 555.05 + 55.50 + 5.55 + 5 + 0.55
    = 621.65 == 622

     

  6. If Aโ€™s salary is 25% higher than Bโ€™s salary, then how much per cent is Bโ€™s salary lower than Aโ€™s?
    50%
    40%
    30%
    20%
    60%
    Option D
    A = B + 25% of B
    โ‡’ ๐ด = ๐ต + ๐ต/ 4 = 5๐ต/ 4
    โ‡’ ๐ต = 4/5 ๐ด = ๐ด โ€“ 1/5 ๐ด
    = ๐ด โˆ’ 20% ๐‘œ๐‘“ A = 20%

     

  7. The sides of a triangle are in the ratio of 1/2 โˆถ 1/3 โˆถ 1/4 . If the perimeter is 52 cm, then the length of the smallest side is:
    10
    16
    12
    20
    13
    Option C
    Sides of a triangle are in ratio 1/2 โˆถ 1/3 โˆถ 1/4 ,
    i.e., 6 : 4 : 3. Let the sides be 6K, 4K and 3K, respectively.
    13K = 52
    โ‡’ K = 4
    Sides of the triangle are 24 cm, 16 cm and 12 cm, respectively

     

  8. Ravi sells an article at a gain of 12(1/2)%. If he had sold it at Rs. 22.50 more, he would have gained 25% The cost price of the article is:
    180
    120
    140
    190
    160
    Option A
    12 (1/ 2) % = Rs 22.50
    โ‡’ C.P. = Rs 180

     

  9. A certain job was assigned to a group of men to do it in 20 days. But 12 men did not turn up for the job and the remaining men did the job in 32 days. The original number of men in the group was:
    35
    30
    31
    32
    33
    Option D
    Suppose x = original number of men in the group (x- 12) men did the job in 32 days
    20x = 32(x โ€“ 12)
    =>x = 32

     

  10. A vessel contains liquid P and Q in the ratio 5 : 3. If 16 litres of the mixture are removed and the same quantity of liquid Q is added, the ratio become 3 : 5. What quantity does the vessel hold?
    60
    50
    70
    80
    40
    Option E
    Let, the quantity of liquid P and Q be 5x and 3x litres respectively.
    Quantity of P removed = 5/( 5+3) ร— 16 = 10 litres
    Quantity of Q removed = 3/(5+3 )ร— 16 = 6 litres
    Now, 5๐‘ฅโˆ’10/(3๐‘ฅโˆ’6+16) = 3/5
    โ‡’ 25๐‘ฅ โˆ’ 50 = 9๐‘ฅ + 30
    โ‡’ 16๐‘ฅ = 80
    โ‡’ ๐‘ฅ = 5
    Quantity that vessel hold = 8 ร—5 = 40 litres

     


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