What percentage should be removed?

[koiuuuuuuuuuuu]

The price in the shop is $ 20 by how much % you how to reduce the price to get 15
So 20= to 100%. if you take away 20 from 15 you get 5
So if you take 100-5 =95
So is it 95%
if it is wrong explain please

 

[DrClaude]

What is 95% of $20?

 

[koiuuuuuuuuuuu]

$ 19, but is it correct?

 

[DrClaude]

If 95% of $20 is $19, how can you get that reducing the a price of $20 by 95% gives you $15?

Set up the problem as a mathematical equation.

 

[koiuuuuuuuuuuu]

Help me to set up the equation, because I'm confused.

 

[DrClaude]

Start simply: If you were told that there was a sale where items were 40% off, how would you go about calculating the price to pay for something originally costing $20?

 

[jedishrfu]

Have you looked at Khan Academy? They have many videos on doing these exact same problems.

www.khanacademy.org

There’s also the www.mathispower4u.com website with math videos from prealgebra to first year college.

 

[Mark44]

The price in the shop is $ 20 by how much % you how to reduce the price to get 15

So 20= to 100%. if you take away 20 from 15 you get 5

As @DrClaude said, set up an equation to represent the situation. What you wrote here makes no sense. "20= to 100%" ??
If you take away 20 from 15, you don't get 5.
If you have $15 in your wallet, can you spend $20 and still have $5 left?

So if you take 100-5 =95

The numbers in the problem are 20 and 15.