Question

Two numbers are in the ratio of 5:6. Their sum is 77. What is the positive difference between the two numbers?

Answer 1

7

Explanation:

a:b = 5:6

∃x such that a=5x and b=6x

a+b = 77

5x+6x = 77

x = 7

a = 5x = 35

b = 6x = 42

42-35 = 7