Question

A car covers 30km at a uniform speed of 30 m/hr. What should be its speed for the next 90 km if the average speed for the entire journey is 60 km/h?

Answer 1

Answer:

90 Km

Step-by-step explanation:

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Answer 2

Answer:

ans is 90 km/hr speed.

Step-by-step explanation:

total distance = 30+90=120

if avg. spd is 60 km/h then total time to cover

the dist. is 2 hour.

avg spd.= (30+x)/2

distance=spd * time

120=(30+x)/2*2

120=30+x

=120-30=90

i.e spd = 90 km/h