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Mathematics 21 Online
OpenStudy (anonymous):

A hardware store had 300 gallons of white paint on the shelves at the beginning of the month. At the end of themonth, there were 252 gallons of white paint. What is the percent decrease in the number of gallons of white paint from the beginning of the month to the end? Answers: 16% 17% 19% 21% Please explain in detail as much as you can. Thank You!!

OpenStudy (anonymous):

252/300 * 100 maybe

OpenStudy (anonymous):

that is 100-84

OpenStudy (anonymous):

16 i guess

OpenStudy (inkyvoyd):

\(\huge \frac{300}{100\text{%}}*x=252\) now, you want to take the original value, and the resulting value, and subtract the two.

OpenStudy (inkyvoyd):

Remember, we want the original value (100%) minus the value after solving the equation (x%), subtract the two, and there is your answer.

OpenStudy (inkyvoyd):

@RuSSian1909 , does that make sense to you?

OpenStudy (anonymous):

[(300-252)/300]*100

OpenStudy (anonymous):

yah, but why divide by 3 on 300 and 252 to get 100 & 84?

OpenStudy (anonymous):

nevermind.

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