Question

A $199 MP3 player is on sale for 15% off. What is the discounted price?

Answer 1

`$199` is the total price of the MP3 player... which means it's the

`100%` of the player

`15%` off means `100%-15%=85%` of the total value

To find it out multiply

Remember `a%=a/100`

`15%" off of "$199 = $199xx85/100`

Now if you've a calculator.... simply multiply... if you don't

`199=200-1`

`15%" off of "$199 = ($200-$1)xx85/100`

`15%" off of "$199 = $2cancel00xx85/(1cancel00)-$1xx85/100`

`15%" off of "$199 = $170 - ($ 85)/100`

`15%" off of "$199 = 170 - $0.85`

`color(red)(15%" off of "$199 = $169.15`