Rafia ran from her house to school at an average speed of 6 miles per hour and returned along the same route at an average speed of 4 miles per hour . If it took her one hour in total to run to the school and come back, how many minutes did it take her to run from her house to school?
Created: 6 years ago |
Updated: 11 months ago
best des
Let, Distance = D
we know that , T = D/s
Here, T = time, D = ddistance, S = speed
According to question,
D/6 + D/4 = 1
(2D + 3D) /12 = 1
D = 12/5
6 mile go 1 hours or 60 minutes
1 mile go 60/6 minutes
12/5 mile go ( 60×12)/ ( 6×5) = 24 minutes ( correct answer)
Md Azizur Rahman
Founder of Satt
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