Question

3. Shalu cycles to her school at an average speed of 12 km/h. It takes her 20 minutes to reach
the school. If she wants to reach the school in 15 minutes, what should be her average
speed?​

Answer 1

Answer:

Speed= Time/Distance

⇒Distance=Speed×Time

So, distance to the school =12km/hr×

20minutes=12km/hr× 20/60 hour=4 km

So, to cover distance 4km in 15minutes,

Speed=

4km / 15min = 4km / ( 15 / 60) hour =16km/hr

Hope this is helpful for you.