Question

the sum of two no. is 90 and the greater no. exceed twice the smaller no. by 15. find the no.

Answer 1

let 1st no. be x
then second be 2x+15
now. x + 2x+15= 90
3x= 75
x= 25
so no. are 25 and 65

Answer 2

let the greater no. be x
smaller no. be y

x+ y =90
x-y= 15

2x =105
x=52.5

x-y=15
52.5-y=15
y=37.5