Question

11 A car covers a certain distance in 50 minutes if it runs at 45 km per hour. How much time will it
take to cover the same distance at a speed of 30 km per hour?
12.) A bus covers 100 km in first 2 hours, 64 km in the next 1 hour and 72 km in the next 2 hours.
Find the average speed of the bus during the whole journey.
​

Answer 1

Answer:

11- given speed= 45 km per hour

time= 50 minutes

distance= 45*50= 2250km

t= 2250/30

t= 75 minutes

t= 1 hour 15 minutes

Answer 2

Answer:

11=time=distance/speed

t=2250/30

=1hr 15 mim

12=A bus covers 100 km in first 2 hours

64 km in the next 1 hour and 72 km in the next 2 hour . =>

5 hrs . => 65.2 kmph. Thus , the average speed of the bus is 62.5 kmph .