Mathematics
kva10
66

A new cell phone is on sale for 40% off its original price. The sale price is $48. What was the original price of the cell phone?

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(1) Answers
landolt

We know that the sale price is $48 which is 60% (because 100% - 40% = 60%) of x, so we can write it down as: 48 = 60% from x 48 = 60/100 * x 48 = 6/10x 48 = 3/5x                      / * 5 (both sides) 240 = 3x                        / ÷ 3 (both sides) x = 80 Doublecheck: 80 * 60% = = 80 * 60/100 = = 80 * 3/5 = = 240/5 = = 48 So it's correct ;) Answer: The original price was $80.

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