Question

please help in this question

Answer 1

Distance travelled between 9:30 to 10:00 i.e in 30 min or in 0.5 hr = speed×time
distance = 10×0.5 = 5 km

Avg speed between 9:00 to 10:00 i.e. in 1 hr
= total distance travelled / total time taken
= 5/1
= 5 km/hr


Time between 9:15 to 10:00 = 45 min = 3/4 hr
avg speed = 5*4/3 = 20/3 = 6.66 km/hr

hope it will help