CUET Preparation Today
CUET
General Test
Numerical Ability
Ratios
If x : y = 3 : 4, then (7x + 3y) : (7x – 3y) = ?
4 : 3
5 : 2
11 : 3
37 : 19
Given x:y = 3:4
Then, 7x + 3y : 7x - 3y = (7x3 + 3x4) : (7x3 3x4)
= (21 + 12) : (21 - 12)
= 33 : 9
= 11 : 3