Question

A : B = 2 : 3 and B : C = 4 : 5, then A : C = ______.​

Answer 1

Answer:

A : B = 2 : 3          - (1)

B : C = 4 : 5          - (2)

Myltiplying (1) by 4 and (2) by 3,

A : B = 8 : 12

B : C = 12 : 15

Hence, A : C = 8 / 15

Answer 2

A × B = 2 × 4

B C 3 5

A = 8

C 15

A:C = 8 :15