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SAT® Math

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Moderate

Discount Percentages

SATMAT-11LDYE

The regular price of a jacket is $ R $ dollars. This price is discounted by $ a $ "percent off" of the regular price. If sales tax, which is $ b $ percent of the selling price, is added on, then the total amount paid for the jacket is given by the equation:

$$ T = \left[ \left( R \right) \left( 1 - \frac { a }{ 100 } \right) \left( 1 + \frac { b }{ 100 } \right) \right] $$

Which is a true statement about the variable $ a $? (No Calculator)

A

$ a $ represents the amount of the discount before tax is applied.

B

$ 100-a $ percent of the regular price is the selling price.

C

$ a $ percent of the regular price is the selling price.

D

$ a $ is the amount of the discount after tax has been applied.