A jacket is priced at $21.42. The store is having a 30% off sale.What was the original price of the jacket?

Question

Not sure the format of the question. Would appreciate guidance

 

Answer 1

30% off means 70% of full price.

 

70% ≡ 7/10

 

part/whole = part/whole

 

so,

21.42/(full price) = 7/10

214.2/7 = (full price)

30.60 = (full price)

Answer 2

The sale price is 30% off the original price, so if x is the original price, then x - .30x = .70x is the sale price.

 

Solve .70x = 21.42:

 

x = 21.42/.7 = $30.60.

 

The original price is $30.60.