Question

A price decreased from $25 to $10. Find the percent of decrease.

Answer 1

10/25

Answer 2

An item sells for $75 after a 50% discount. Find the original price.

Answer 3

can you show me how to do it?

Answer 4

For the first one, you take 10 dollars and divide it by 25 dollars.\[\frac{ 10 }{ 25 }=0.4\]

Answer 5

0.4 = 40%

Answer 6

say for example from $25 to $10.

the original price was $25, it decreased to $10

so if we use the original price to say it be, the 100% we start from then we could say \(\bf \begin{array}{ccllll}
quantity&\%
\\\hline\\
25&100\\
10&x
\end{array}\implies \cfrac{25}{10}=\cfrac{100}{x}\)

Answer 7

Now for the second one, you can take 75 and multiply it by two, because 50% means half off.

Answer 8

I have another question do you want me to open another post?

Answer 9

Sure :)