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.