The 600-gallon tank will be filled in 120 minutes.
Let the time taken for the 600-gallon tank be represented by x
Based on the information given, the equation to use will be:
90/600 = 18/x
Cross multiply
(90 × x) = 600 × 18
x = (600 × 18) / 90
x = 120 minutes
Based on the above, it can be deduced that the 600-gallon tank will be filled in 120 minutes.
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