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I think the answer is,66 gallons because it is30 percent of 220 gallons
100 percent minus 70 percent equals 30,so we have to get the 30 percent of 220
220 x .30 =66
220x .70=154
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Thanks Izshangmae I got the answer from your computation. The percent given is only 80% not 100% so there is only a difference of 10%. So instead of 66 iit is only 22.
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