1.

During the first 18 min of a 60 min trip , a car has an average speed of 11m/s . What should be the average speed for remaining 42 min so that car is having an average speed of 21 M/s for the entire trip ?

Answer» During the first 18 min of a 60 min trip , a car has an average speed of 11m/s . What should be the average speed for remaining 42 min so that car is having an average speed of 21 M/s for the entire trip ?


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