If  a: b = 2 : 3 and b : c = 7 : 8, find a : c.

Correct option is B

Given:
a:b = 2:3
b:c = 7:8
Formula Used:
Ratio concepts used
Solution:
If a:b = 2 :3
b :c = 7 :8
We equate ratio of B
a : b = (2:3)$$\times$$​ 7
a : b =14: 21
b : c = (7:8 ) $$\times$$​3
b :c = 21: 24
a:b:c =14:21:24
a:c = 14:24 = 7:12