Question

The bus covers a certain distance in 3 hours 20 minutes at an average speed of 45 km/h . How long will it take to cover the same distance at a speed of 36 km/h?

Answer 1

Step-by-step explanation:

step by step explanation to find time

Answer 2

${\bold{\underline{\underline{Answer:}}}}$

${\bold{\therefore Time\:taken=4\:hours\:10\:minutes}}$

${\bold{\underline{\underline{Step-by-step\:explanation:}}}}$

• In the given question information given about a bus covers a certain distance in 3 hours 20 minutes at an average speed of 45 km/h .

• We have to find the time taken at speed of 36 km/h.

$\underline \bold{Given : } \\ \implies Speed = 45 \: kmh \\ \\ \implies Time = 3 \: hours \: 20 \: min \\ \\ \underline \bold{To \: Find : } \\ \implies Time \: taken \: _{(at \: speed \: 35 \: km h )} = ?$

• According to given question :

$\bold{For \: speed \: of \: 45 \: kmh : } \\ \implies Distance = Speed \times Time \\ \\ \implies D= \cancel{45} \times \frac{10}{\cancel3} \\ \\ \bold{\implies D = 150 \: km} \\ \\ \bold{For \: speed \: of \: 36 \: kmh : } \\ \implies Time = \frac{Distance}{Speed} \\ \\ \implies t = \frac{150}{36} \\ \\ \bold{\implies T= 4 \frac{1}{6} \: hours} \\ \\ \bold{\therefore Time \: taken = 4 \: hour 10 \: minutes}$