Question

a/4=b/5=c/9, prove that (a+b+c)/9=2

Answer 1

Solving the given condition

5a/4b = c / 9
5ac/4b=1/9
36b/5ac=1
36b=5ac
36/5 = ac/b'
Hence Prooved


Done, the question should be wrong ahead.


Hope it helps.