A girl goes to school at a speed of 10 km/hr. She comes back with a speed of 40 km/hr.
Find her average speed for the whole journey.
A10 km/h
B6 km/h
C16 km/h
D14 km/h
A10 km/h
B6 km/h
C16 km/h
D14 km/h
Related Questions:
Amita travels from her house at km/h and reaches her school 6 minutes late. The next day she travels at km/h and reaches her school 10 minutes early. What is the distance between her house and the school?