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% 𝑜𝑓 {(80% 𝑜𝑓 850) ÷ 34}] = ?
   11
   9
   8
   6
   14
   Option D
   [30% 𝑜𝑓 {(80% 𝑜𝑓 850) ÷ 34}] = ? ? = [ 30/100 × {( 80/100 × 850) ÷ 34}] = [ 30/100 × {680 ÷ 34}] = [ 30/100 × 20] = 6
   
    



2. 65% 𝑜𝑓 240+ ?% 𝑜𝑓 150 = 210
   40
   36
   44
   58
   52
   Option B
   65% 𝑜𝑓 240+ ?% 𝑜𝑓 150 = 210 =65/100 𝑜𝑓 240 + ?/100 𝑜𝑓 150 = 210 ⇒ 156 + 1.5 ×? = 210 =>? = (210−156)/1.5 = 36
   
    



3. ? % of 800 = 293 – 22% of 750
   20
   18
   10
   16
   12
   Option D
   ? % of 800 = 293 – 22% of 750 =>800 ×? /100 = 293 – (750 × 22)/100 ⇒ 8 × ? = 293 − 165 = 128 ⇒ ? = 128/8 = 16
   
    



4. 1425 + 8560 + 1680 ÷ 200 = ?
   9993
   9120
   9003
   9191
   9009
   Option A
   1425 + 8560 + 1680 ÷ 200 = ? => ? = 1425 + 8560 + 1680 ÷ 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 A’s salary is 25% higher than B’s salary, then how much per cent is B’s salary lower than A’s?
   50%
   40%
   30%
   20%
   60%
   Option D
   A = B + 25% of B ⇒ 𝐴 = 𝐵 + 𝐵/ 4 = 5𝐵/ 4 ⇒ 𝐵 = 4/5 𝐴 = 𝐴 – 1/5 𝐴 = 𝐴 − 20% 𝑜𝑓 A = 20%
   
    



7. The sides of a triangle are in the ratio of 1/2 ∶ 1/3 ∶ 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 ∶ 1/3 ∶ 1/4 , i.e., 6 : 4 : 3. Let the sides be 6K, 4K and 3K, respectively. 13K = 52 ⇒ 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 ⇒ 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 – 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) × 16 = 10 litres Quantity of Q removed = 3/(5+3 )× 16 = 6 litres Now, 5𝑥−10/(3𝑥−6+16) = 3/5 ⇒ 25𝑥 − 50 = 9𝑥 + 30 ⇒ 16𝑥 = 80 ⇒ 𝑥 = 5 Quantity that vessel hold = 8 ×5 = 40 litres