Question

13. If (a+b )2 = 100 and a: b= 1:3 find ab.​

Answer 1

Step-by-step explanation:

Let x be the same factor as the ratio

then,

a=x and b=3x

(a+b)2=100

x+3x=100

4x=100

x=100/4

x=25

à=x=25,b=3x=3×25=75