Discussion Forum



1)

If $\frac{A}{3}=\frac{B}{4}=\frac{C}{5}$, then $A:B:C$ is :


A) 3:4:5

B) 2:1:4

C) 4:5:7

D) 6:4:8

E) 5:4:2

Answer:

Option A

Explanation:

Let $\frac{A}{3}=\frac{B}{4}=\frac{C}{5}=k$.

Then,$ A=3k$, $B = 4k$ and $C=5k$

$A: B:C$ $=3k:4k:5k$ $=3:4:5$