Question

If a/3=b/5=c/7, then find (a+b+c)÷b with explanation pls.​

Answer 1

Step-by-step explanation:

let a/3=b/5=c/7 =k

a/3= k

a=3k

b/5=k

b=5k

c/7 =k

c=7k

(a+b+c)÷b=(3k+5k+7k)/5k

=15k/5k

=3