SOLUTION: A vacuum claims to pick up 80% of the dirt every time it is run over the carpet. Assuming this is true, what percent of the original amount is picked up after the seventh time the

SOLUTION: A vacuum claims to pick up 80% of the dirt every time it is run over the carpet. Assuming this is true, what percent of the original amount is picked up after the seventh time the

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Question 861420: A vacuum claims to pick up 80% of the dirt every time it is run over the carpet. Assuming this is true, what percent of the original amount is picked up after the seventh time the vacuum is run over the carpet?
Answer by richwmiller(17219) (Show Source): You can put this solution on YOUR website!
x = t * .8^(6)
x = 0.262144 t
26.2144 % of the original
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