Question

What number must be added to the terms of 3 : 5 to make the ratio 5 : 6?

Options

• 6

• 7

• 12

• 13

Answer 1

7

Explanation:

Let the number be x.

Then `(3 + x)/(5 + x) = 5/6`, which gives 18 + 6x = 25 + 5x, so x = 7.