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A pool which was 2/3 full to begin with, was filled at a constant rate for (1 2/3) hours until it was 6/7 full. At this rate, how much time would it take to completely fill this pool if it was empty to begin with?
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A pool which was 2/3 full to begin with, was filled at a constant rate for (1 2/3) hours until it was 6/7 full. At this rate, how much time would it take to completely fill this pool if it was empty to begin with?
Hi, (6/7-2/3)full is filled in 5/3 hours So 4/21 full is filled in 5/3 hours So the filling rate is: 4/21 / (5/3) = 4/35 So the pool is filled completely in: 1/ (4/35) = 35/4 hours A is my answer
Still interested in this question? Check out the "Best Topics" block above for a better discussion on this exact question, as well as several more related questions.