Question

A bus covers a certain distance in $3$ hour $20$ minutes at an average speed of $45$ k/h. How much time will it take to cover the same distance at a speed of $50$ k/h?

Answer 1

we have, $\vartheta =\frac{d}{t}$

$\Rightarrow d=\vartheta t$

for same distance,

${\vartheta }_1{t}_1={\vartheta }_2{t}_2$

$\Rightarrow \left(45\right)\left(200\right)=50\left(t_2\right)$

$\Rightarrow t_2$ $=180minor3hrs$.