Question

Shadow of a 20 metre long trees is 18 m in morning. What will be height of shadow of 120 m high tower at same time?

Answer 1

Let x meter be the length of shadow.

This is direct relation.

10 : 120 :: 18 : x

Product of outer terms = Product of middle terms

⇒ 10 × x = 120 × 18

⇒ x = (120 x 18)/10

⇒ x = 216

Hence, the required shadow is 216 meter.