Chain Rule - Quantitative Aptitude (MCQ) questions for Q. 20424

Q.  If 15 toys cost Rs. 545, what do 37 toys cost ?
- Published on 07 Jul 17

a. Rs. 1344
b. Rs. 1200
c. Rs. 1668
d. Rs. 1542

ANSWER: Rs. 1344
 
Let the required cost be Rs. x.
More toys, More cost (Direct proportion)
Therefore 15 : 37 :: 545 : x
(15 * x) = (37 * 545)
x = (37*545)/15
= 1344.33
Hence, the cost of 37 toys is Rs. 1344.33

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