During the first 18 min of a 60 min trip a car has an

Last updated: 6/8/2023

During the first 18 min of a 60 min trip a car has an average speed of 11 ms What should be the average speed for remaining 42 min so that car is having an average speed of 21 ms for the entire trip A 25 3 ms C 31 ms B 29 2 ms D 35 6 ms