Question

A pond at a hotel holds 4,290 gallons of water.

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

Answer 1

55 hours

Explanation:

Write the problem as an equation.

4290-78x=0

Where 'x' is each hour the pond is being drained.

Then, solve.

4290=78x Add 78x to each side of the equation

55=x Divide both sides by 78