Ratio and Proportion - Quantitative Aptitude (MCQ) questions for Q. 701

Q.  Find the value of x when y = 5, if x varies directly as 4y-1 and x = 14 when y = 2.
- Published on 06 Jul 15

a. 38
b. 35
c. 10
d. 28

ANSWER: 38
 
Let z = 4y-1
When x = 14, y = 2, z = (4*2) – 1 = 7
Now, x varies directly as z = 4y-1
When y = 5, z = (4*5) – 1 = 19
x 14 7
y - 19

Therefore, x = (14*19)/7 = 38

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