To clean laundry,1/3 cup of bleach is needed for every 2 gallons of water. How many cups of bleach are needed for 20 gallons of water?

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Answer 1 · 2018-06-11T01:05:03

#3 1/3# cups

A third of a cup bleach is used for every 2 gallons of water. So the first thing to figure out is how many groups of 2 gallons there are in the tank.

Since there are #20# gallons, there would be:

#20/2 = 10# groups of #2# cups

So #10# groups of #1/3# a cup will be needed. So multiply:

#10 xx 1/3#

#10/1 xx 1/3#

#10/3 rArr 3 1/3#

So #3 1/3# cups are needed.