A and B travel from home to school and back once a day. How much more distance does B travel from Monday to Friday?
The correct option is B: 10 km
Monday to Friday =5 days
Distance travelled by A in 1 day
Distance travelled by B in 1 day
Total distance travelled by A in 5 days
=2×5=10 km
Total distance travelled by B in 5 days
=4×5=20 km
So, B travels (20−10) km=10 km more than A from Monday to Friday.