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A man and a woman 81 miles apart from each other, start travelling towards each other at the same time. If the man covers 5 miles per hour to the women’s 4 mile per hour, how far will the woman have travelled when they meet?
Time taken to meet = $$\ \frac{\ Dis\tan ce\ between\ them\ }{Relative\ speed}$$
Relative Speed = 5 +4 = 9 miles per hour.
Time take to cover 81 miles = $$\ \frac{\ 81\ }{9}$$ = 9 hours.
Woman travelled in 9 hours = 9*4 = 36 miles.
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