Question

Original price of a computer what is $1250 a year on sale, the selling price of acomputer was $900. Find percent discount.

Answer 1

Answer: 28% discount

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Proof:

1250 - 900 = 350 is the amount saved

350/1250 = 0.28 = 28% is the discount

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You take 28% of 1250 to get 350, then subtract off 350 to end up with 900

1250 - (28% of 1250) = 1250 - 0.28*1250 = 1250 - 350 = 900

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Or a shortcut is

1250*(1-0.28) = 1250*0.72 = 900

This is because the price is reduced by 28%, so you still pay the remaining 72%