Question

The sum of two number is 180 and their ratio is 5:7 . find the number

Answer 1

5x +7x = 180

12x=180

X=180÷12

=15

Answer 2

Explanation:

Let the 1st number be x

Then 2nd number = 180 - x

A/Q

x/180-x = 5:7

7x = 900 - 5x

12x = 900

x = 75

1st number = 75

2nd number = 105