Question

Shreya rides a bicycle with a bicycle with
a speed of 10 km/h for 2hr & 15km/hr For
next 3 hr. Find the distance moved by her
and average speed​

Answer 1

We know speed = distance/time

:- distance= speed *time

d' = 10*2 = 20 km

d''= 15*3= 45 km

Total distance (d) = d'+d''= 20+45 = 65 km

total time (t) = 2+3 =5 hrs

Now avg speed = total distance / total time = 65/5 =13 km/ hr

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Answer 2

Total distance =2(10)+3(15)=20+45=65
Time taken =2+3=5hrs
Average speed=d/t
=65/5
=13km/hr.