What number needs to be added to 7 and 9 so that the ratio of the first number to the second becomes 4:5?

Question

asked May 5, 2022 208k views

1 Answer

Jamie Rees · Answer 1 · 2022-05-12T05:23:58+0000

Explanation:

Let the number be x.

Now after adding 7 and 9 and taking the ratios of first and second the ratio becomes 4:5.

According to the given condition,

x+7 / x+9 = 4 / 5

5 (x+7) = 4 (x+9)

Cross multiplying both sides , we get

5x + 35 = 4x + 36

x = 1

The number obtained is 1.

The number that is added to 7 and 9 and when taken ratio gives 4:5