Question

At 9 AM, the shadow of a 5 (feet) tall boy is 8. At the same time, shadow of a flagpole beside is 28 feet. What is height of the flagpole?

Answer 1

5:8::x:28
5/8=x/28
on solving
x= 35/2
x = 17.5

Answer 2

Answer:

The height of flagpole is 17..5 ft

Step-by-step explanation:

Since, at the same time,

$\frac{\text{The height of boy}}{\text{His shadow's length}}=\frac{\text{The height of flagpole}}{\text{The length of shadow of flagpole}}$

Given,

The height of boy = 5 ft,

His shadow's length = 8 ft,

The length of shadow of flagpole = 28 ft,

Let x be the height of the flagpole,

$\frac{5}{8}=\frac{x}{28}$

$\implies x = \frac{140}{8}=17.5$

Hence, the height of flagpole is 17..5 ft