The third proportional to 3 and 15 is a multiple of:

The third proportional to 3 and 15 is a multiple of:

A 2

B 3

C 7

D 1

E 9

Solution

Correct Answer: Option B

Let the third proportional be ‘x’, then,

⇒ 3/15 = 15/x

\(\Rightarrow x = \frac{{15 \times 15}}{3} = 5 \times 15\)

⇒ x = 75

= 3 × 25.