Question
Ahmad took 2 hours to walk from Building S to Building T which was 10 km away. On his way back from Building T to Building S, he increased his average walking speed by 1 km/h. How long did he take for his journey back?
3 m

Click button first when a symbol is required. X

Ahmad took 2 hours to walk from Building S to Building T which was 10 km away. On his way back from Building T to Building S, he increased his average walking speed by 1 km/h. How long did he take for his journey back?