This is a great math challenge and it is a perfect educational activity for practicing children’s math skills.

## Challenge:

The sale price of a computer with \(20\%\) discount is $20 cheaper than its price with \(15\%\) discount. What is the original price of the computer?

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The correct answer is 400.

Let’s choose x for the original price of the computer. Then,

0.80 x = 0.85 x – 20 → 0.05x = 20 → x = 400

The original price of the computer is $400