Question

find the two positive number in the ratio 2 : 5 such that their difference is 15

Answer 1

let the two no. be 2x and 5x
ratio of 2x&5x=2:5
according to question 5x-2x=15
so 3x=15
so x=5
2x=10
5x=25
so the rear no. is 10 and 25.

Answer 2

let the numbers be 2x and 5x
according to the question there difference must be 15 so
equation is

2x-5x=15

3x=15

x=5

so numbers are 2x5=10
and 5x5=25