CUET Preparation Today
CUET
General Test
Numerical Ability
Ratios
The sum of two numbers is 77 and their ratio is 6 : 5. What is their difference?
4
6
7
5
A : B = 6 : 5
A + B = 77
⇒ (A + B) units = 77,
⇒ 11 units = 77,
⇒ 1 units = 7,
⇒ A - B = 6 - 5 = 1 x 7 = 7.
