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Two ways to think about it.
Multiply $60 times .30 then subtract that from $60
60x.30=18
60-18=42
$42.00 is the cost of the shirt on sale.

70% is the complement of 30% found by subtracting 100%-30%.
Multiply $60 by .70=$42.00
$42.00 is the cost of the shirt at 30% off.

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15y ago

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