Question

the sum of two number is 40 and difference is 4 what is the ratio between the number?

Answer 1

=>(x+y)(x−y)=404

=>(x+y)=10(x−y)

=>9x=11y=>xy=119

Answer 2

(x+y)(x-y) =404

(x+y)=10(x-y)

9x= 11y

x-y=119