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Instead of working with 35% lets break it into 10%. Remember, you can always find 10% of any number by moving the decimal one place to the left. So 10% of $21 would be $2.10.

$2.10 + $2.10 + $2.10 + $1.05 (5% is half of 10%) = $7.35.

Now simply subtract: $21 - $7.35 = $13.65 or 35% off of $21

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14y ago

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