Target Exam

CUET

Subject

General Test

Chapter

Numerical Ability

Topic

Ratios

Question:

If x : y = 3 : 4, then (7x + 3y) : (7x – 3y) = ?

Options:

4 : 3

5 : 2

11 : 3

37 : 19

Correct Answer:

11 : 3

Explanation:

Given x:y = 3:4

Then, 7x + 3y : 7x - 3y = (7x3 + 3x4) : (7x3  3x4) 

= (21 + 12) : (21 - 12)

= 33 : 9

= 11 : 3