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1. |
Q: A man reaches his office 20 min late, if he walks from his home at 3 km per hour and reaches 30 min early if he walks 4 km per hour. How far is his office from his house ? |
A. | 20 km |
B. | 16 km |
C. | 14 km |
D. | 10 km |
Answer» E. | |