If i buy something that is $91 with a 30% discount what was the orinigal price

Answer 1

$91 Purchase with a 30% discount, means you paid 70% of the original price.

70% OF THE ORIGINAL PRICE IS $91

Let P = original price

.7P = 91

7P = 910 Multiplying both sides by 10 to eliminate the decimal.

P = 910/7 Dividing both side by 7 to isolate P.

P = 130

ANSWER: $130 WAS THE ORIGINAL PRICE.

ANOTHER METHOD:

70/100 = 91/P

70P = (100)(91) Using CROSS MULTIPLICATION

70P = 9100

P = 130

CHECKING:

70% OF $130 = .7 x 130 = 91.0

Hope this was helpful ISAIAH.