Suppose 1.5 liters of water come out of a faucet each minute. For how many minutes was the faucet on if 18.6 liters of water came out?

1 Answer
mimi
Jun 21, 2017

#12.4# minutes

Explanation:

Define your variables.
#x=#minutes
#y=#liters of water

Set up an equation.
For every #x# minutes, #y# liters of water will come out.
#y=1.5x#

Substitute #y# for #18.6# to solve for #x#, the number of minutes.
#18.6=1.5x#
#x=12.4#

Answer: The faucet was on for #12.4# minutes.

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