Ashraf takes 20 minutes to reach his school at the average speed of 6 kilometre per hour if he is required to reach school in 24 minutes . what should be his speed ?
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t=1/3 hours
average s=6 km/h
hence d=6x(1/3)
d=2 km
to reach in 24 minutes,
s=2/(24/60)
s=2/(2/5)
s=5 km/h
Answered by
0
Answer:5km/h
Step-by-step explanation:
As this is a case of inverse proportion so:
x1y1 = x2y2
20*6 = 24*y2
20*6/24 = y2 (first divide 20 and 24 with 2 and then 6 and 12 with 6)
5 = y2
Therefore,to reach school in 24 minutes ashraf's speed should be 5km/h
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