Ratio and Proportion - Quantitative Aptitude (MCQ) questions for Q. 20619

Q.  Shruti purchased several number of three articles P, Q and R in the proportion 3 : 2 : 3. If the unit costs of the articles P, Q and R are 200, Rs. 90 and Rs. 60 respectively, how many articles of Q must have been purchased in the total purchases of Rs. 4800?
- Published on 07 Jul 17

a. 8
b. 10
c. 12
d. 14
e. None of these

ANSWER: 10
 
Let the number of articles of types P, Q and R be 3a, 2a and 3a respectively.
Thus, we get,
(200 x 3a) + (90 x 2a) + (60 x 3a) = 4800
960a = 4800
a = 5
Hence, the number of articles of type “Q” = 2x5 = 10

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