A van can finish a certain journey in 10 hours at the speed of 48km/h . By how much should its speed be increased so that it may take only 8 hours to cover the same distance.
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Answer:
It's speed should be increased to 60 km/h so that it can cover the distance .
Step-by-step explanation:
as we know
s=d/t
In first case,
s=48km/h
d=?
t=10hours
therefore
s=d/t
48=d/10
d=48x10
d= 480km
second case,
s=d/t
s=480/8
s=60km/h
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