Question

A spider climbed $62.5\%$ of the height of the pole in one hour and in the next hour covered $12.5\%$ of the remaining height. If the height of the pole is $192m,$ then the distance climbed in the second hour is

• A. $3m$
• B. $5m$
• C. 7m
• D. 9m

Answer 1

The correct option is D

9m

Explanation for correct option:

Height of pole =$192m$

Distance covered by the spider in one hour $=62.5\%of192m$

$$\begin{gathered} =\frac{62.5}{100}\times 192 \\ =120m \end{gathered}$$

Remaining height $=192-120$

$=72m$

$12.5\%$ of remaining height $$\begin{gathered} =\frac{12.5}{100}\times 72 \\ =9m \end{gathered}$$

Distance climbed in second hour$=9m$

Hence option (d) is the correct answer.