Question

A bus covers 30 km at uniform speed of 60 km/h. It covers next 30 km with a speed of 40 km/h. The total time to cover the distance is​

Answer 1

Step-by-step explanation:

Time to cover the 1st 30 km= distance/speed= 30/60 hr= 1/2 hr.= 30 mins

Time to cover the next 30 km= distance/speed= 30/40 hr= 3/4 hr.=45 mins

Total time to cover the distance is= (30+45) mins= 75 mins= 1hr 15 mins.

Answer 2

Answer:

Step-by-step explanation:

Distance(1)=30km

Speed (1)=60km/HR

Time(1)=distance/speed

=30/60

=1/2 HR

Distance (2)=30 km

Speed (2)=40 km/HR

Time=distance/speed

=30/40

=3/4km

Total time=(1/2+3/4)hr

= 5/4hr