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 Math Central Quandaries & Queries
 Question from Angel: If i have a total price of $15171.00 and we marked it up 30%. What was the original price? Angel, Think of what you would do if you knew the original price and you wanted to find the total price after the markup of 30%. You would take the original price, add 30% of the original price to arrive at the total price. To write this as an equation let$P be the original price then

$P + 30% of$P is the total price, so
$P + 0.3 ×$P = $15171.00 On the left side there is a common factor of$P so

$P(1.30) =$15171.00

Solve for \$P.

Penny

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