Question

A pond at a hotel holds 4290 gallons of water. The groundskeeper drains the pond at a rate of 78 ounce of water per hour. How long will it take take to drain the pond?

Answer 1

`1\ gallon=128\ ounce\\\\ 4290\ gallon=3123120\ ounce\\\\ 78\ ounce\ \ in\ \ \ 1\ hour\\ 3123120\ ounce\ in\ x\ hours\\\\ 78x=3123120\ \ \ |:78\\\\c=40040\ hours\\\\It\ will\ take\ 40040\ hours.`