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Two boys starts from the same place walking at the rate of 5 kmph and 5.5 kmph respectively in the same direction. What time will they take to be 8.5 km apart? | |
A. | 17 hr [Correct Answer] |
B. | 14 hr [Wrong Answer] |
C. | 12 hr [Wrong Answer] |
D. | 19 hr [Wrong Answer] |