Javier bought a microwave for $105. the cost was 30% off the original price. what was the price of the microwave before the sale?

The original cost of the microwave before the sale can be calculated by the formula:

D =( 1 – i)P, where D is the discounted price, P is the origanal price and I is the percent mark down

105 = (1- 0.30) *P

P = $ 150 dollar is the original price of the microwave