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how do you know what formula to use?

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Rozlyn has two containers of water for a camping trip. One container hold 2 times as much as the other. The total amount of water is 27 gallons. How much water is in each container?

Apr 18th, 2015

let the saller container hold x gallons, then big one holds 2x gallons, 

then we have x+2x = 27 

3x = 27 

x=9, 2x = 18

smaller container hold s 9 gallons, big one holds 18 gallons

Apr 18th, 2015

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Apr 18th, 2015
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Apr 18th, 2015
Sep 24th, 2017
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