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7nadin3 [17]
3 years ago
13

A pool can be filled by one pipe in 4 hours and by a second pipe in 12 hours. How long will it take using both pipes to fill the

pool?
Mathematics
1 answer:
Assoli18 [71]3 years ago
8 0
1/t=1/4+1/12=(3+1)/12=4/12=1/3
t=3 hour
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