Question

If a/3=b/2=c/5, then what is the value of ratio (c+a)^2 : (a+b)^2 : (b+c)^2

Answer 1

a/3=b/2=c/5=k( let.)

a=3k, b=2k,c =5k

(c+a)^2:(a+b)^2'(b+c)^2=(8k)^2:(5k)^2:(7k)^2=64:25:49