1)

If 2A=3B and 4B=5C, then A:C is :


A) 15:8

B) 15:7

C) 7:15

D) 12:4

E) 12:15

Answer:

Option A

Explanation:

2A=3B and 4B=5C  (AB)

=(32) and (BC) =(54)

AC =(AB×BC) =(32×54)

=158  A:C=15:8.