An empty pool can be filled in $5$ hours if water is pumped in at $300$ gallons an hour. How many hours would it take to fill the pool if water is pumped in at $500$ gallons an hour?

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Solution

total capacity of pool $= 5 h r s \times 300 = 1500 g a l l o n s$
time taken to fill is $\frac{1500}{500} = 3 h r s$

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An empty pool can be filled in 5 hours if water is pumped in at 300 gallons an hour. How many hours would it take to fill the pool if water is pumped in at 500 gallons an hour?

total capacity of pool=5hrs×300=1500gallonstime taken to fill is 1500500=3hrs

An empty pool can be filled in $5$ hours if water is pumped in at $300$ gallons an hour. How many hours would it take to fill the pool if water is pumped in at $500$ gallons an hour?

total capacity of pool $= 5 h r s \times 300 = 1500 g a l l o n s$
time taken to fill is $\frac{1500}{500} = 3 h r s$