Question

distance = 48km,speed=400m/min,find time in hours​

Answer 1

The time required in hours is 2 hours.

• Distance travelled = 48km
• Speed = 400 m/min
• Given formula is

Speed (km/hr) = $\frac{distance(km)}{time(hr)}$

time(hr) = $\frac{Distance(km)}{speed(km/hr)}$

speed = 400 m / min

• Converting m/min to km / hr

[1km = 1000m]

[1hr = 60min]

speed = $\frac{400}{1}$ × $\frac{60}{1000}$

speed = 24 km/hr

• Now calculating time = $\frac{48}{24}$

time = 2 hr.

Answer 2

We know : Speed × Time = Distance

$\longrightarrow$ Time = Distance/Speed

$\longrightarrow$ Time = 48 km/Speed

• When we convert 400 m/min to km/hr, We get it as 24km/hr

$\longrightarrow$ Time = 48 km/24 km/hr

$\longrightarrow$ Time = 2 hr