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| 1. |
A person travelled a distance of 50 km in 8 hours. He covered a part of the distance on foot at the rate of 4 km per hour and a part on a bicycle at the rate of 10 km per hour. How much distance did he travel on foot? |
| A. | 10 km |
| B. | 20 km |
| C. | 30 km |
| D. | 40 km |
| Answer» C. 30 km | |