Question

In the figure below, AB : BC is 3 : 1 and AC = 48. The length of AB is:

Answer 1

36

Explanation:

Let length of AB be x, then length of BC will be (48-x)

since, AB : BC is 3:1 we get

x = 3 ( 48 - x )

x = 144 - 3x

4x = 144

x = 36