A boy walks to his school at a distance of 6km with constant speed of 2.5kmph and walks back with a constant speed of 4kmph. His average speed for round trip expressed in kmph is
A)24/13
B)40/13
C)3
D)1/2
Competitive Exam Trainer Practice or CET Practice aspires to be a personal subject, preparation and answering technique trainer for students appearing for competitive examinations.
No comments:
Post a Comment