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OpenStudy (anonymous):
A family puts a water saving device on a shower head. They use12 liters of water with each use instead of 20 liters.How much times must the family use the shower head to save 160 liters?
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OpenStudy (anonymous):
?
OpenStudy (triciaal):
before device usage = 20 L after saving device usage = 12 L saving each use = (20 - 12) = 8 L to save 160 L 8L each time for x times = 160 L so 8x=160 solve for x
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