Question

A cyclist travels at 8 km/hr for 15 minutes and then 6 km/hr for 25 minutes.His average speed is?​

Answer 1

Step-by-step explanation:

speed=6km/h=6×1000m/60=100m/min

time=25min.

distance=speed×time

=25×100

=2500m

Now, speed=8km/h =8×1000min/60

=133.3m/min

time=15min

distance=speed×time

=15×133.3

=2000m

avg.speed =total distance /total time

=2000+2500/15+25

=1400/40

=112.5m/min

HOPE ITS HELPS

Answer 2

Speed = s = 8km/hr

speed = s' = 6km/hr

time = 15min

time = t' = 25min

d = 120km

Average speed = total Distance/total time

= (120 + 150)/(15 + 25 )km/min

= 270/40 km/min

= 6.75 km/min