What is the average speed of a car going with speed of 40km/hr and returning with a speed of 50km/hr
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Hey.
Here is the answer.
let the total distance travelled by car be 2x km.
total time taken= x/40 +x/50 h
= 5x+4x/200 =9x/200 h
as average speed= total distance/total time
so, average speed= 2x / 9x/200 = 2×200/9= 400/9 km/h
= 44.44km/hr
Thanks .
Here is the answer.
let the total distance travelled by car be 2x km.
total time taken= x/40 +x/50 h
= 5x+4x/200 =9x/200 h
as average speed= total distance/total time
so, average speed= 2x / 9x/200 = 2×200/9= 400/9 km/h
= 44.44km/hr
Thanks .
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