1)

If A3=B4=C5, 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 A3=B4=C5=k.

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

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