Question

The sum of two number is 40.If one number is 5 more than 3/2 the other,find the number.

Answer 1

let the two numbers be x&y then,
x+y=40
according o the ques,x=5+3/2

2x=5+3y

2x-3y= -5

2x-3y=-5-----1

3x+3y=120---2

m adding 1 and 2we get,5x=115
x=23,y=17