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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?

Sagot :

SlowZasobidn
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.