Question

what is average speed in km/hr​

Answer 1

Answer:

time taken to go to school by walking 3km-30min

so the speed of boojho while going to school --

3/30 (km/min)

= 1/10 (km/min)

= 1/10/60 (km/h)

= 60/10 == 6 km/h

time taken to return home by bicycle -- 20 min

so the speed of boojho while coming back to home -- 3/20 (km/min)

== 3/2/60 (km/ h)

= 3*60/2 == 18/2 == 9 km/h

so the average speed is => (6+9)/2 km/h

= 15/2 => 7.5 km/h ans.

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