Question

a bus covers a certain distance in 42 minutes if it runs at a speed of 50 kilometre per hour what must be the speed of the bus in order to reduce the time of the journey to 30 minutes​

Answer 1

Answer:

The speed of bus should be 70 km/hr

Step-by-step explanation:

As we have given in the question that bus covers a certain distance in 42 min or 0.7 hr at a speed of 50 km/hr

So now first we need to find the distance i.e.

.$D=S\times T$

So,$D=50\times 0.7$$</strong></p><p><strong>D=35 km{/tex}</strong></p><p>Now we need to find the speed of the bus so it should cover the distance of 35 km in just 30 minutes</p><p>So distance will remain the same </p><p><strong>[tex]S=\frac{D}{T}$

$S=\frac{35}{0.5}=70km/hr$

Therefore the final answer would be 70 km/hr