Question

two no.are in the ratio2:3.If 4 is added to each no.the ratio became 1:2 faind no.?

Answer 1

a/b =2/3
a=2x,b=3x
(a+4)/(b+4)=1/2
2(a+4)=(b+4)
2a+8=b+4
4x+8=3x+4
x=-4

Answer 2

Let th no.s be 2x, 3x
A/Q $\frac{2x+4}{3x+4}$ = $\frac{1}{2}$
2(2x+4)=3x+4
4x+8=3x+4
x=-4
∴ 2x = 2x-4 = -8
3x = 3x-4 = -12