Asked by kumar
By increasing the speed of a car by 10km/hr the time of journey for a distance of 72 km is reduced by 36 min. Find the original speed of the car ?
Answers
Answered by
PsyDAG
Distance/rate = time
Let x = original speed in km per hour.
72/x - 72/(x+10) = 36/60
Solve for x.
Let x = original speed in km per hour.
72/x - 72/(x+10) = 36/60
Solve for x.
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