A store is offering 15% off the price of sunglasses if you buy two pair. If the total cost of two pair including the discount is$30.60 then what is the original price of one pair?

Answer 1

Just remove the discount and divide the full price by 2.

Remember that 100% = 1 so any percentage can be converted to a decimal by dividing by 100.

The price you are given is 100% of the two pairs of glasses minus 15% meaning you pay 100 - 15 or 85%.

Find the price without a discount by simply dividing the amount paid by .85, then divide by 2 for the price of each pair of sunglasses:

$30.60 price after discount (85% actual cost)

$30.60 / .85 = $36.00 price before discount

$36.00 / 2 = $18.00 price per pair of sunglasses