Question

Present age of Ram and Ravi are in the ratio

4:3.The ratio of their ages will be 5:4 after
5 years. Find Ravi's present age​

Answer 1

Explanation:

Ravi présent âge 15 because présent would be 20:15 and then it would turn into 25:20

Answer 2

15 years old

Explanation:

Given the ratio of their ages = 4 : 3 = 4x : 3x ( x is a multiplier )

Then in 5 years the ratio of their ages is 4x + 5 : 3x + 5 = 5 : 4, that is

`(4x+5)/(3x+5)` =
`(5)/(4)` ( cross- multiply )

4(4x + 5) = 5(3x + 5) ← distribute both sides

16x + 20 = 15x + 25 ( subtract 15x from both sides )

x + 20 = 25 ( subtract 20 from both sides )

x = 5

Thus

Ravi's age is 3x = 3 × 5 = 15