Posted by **Kenya** on Thursday, February 19, 2009 at 9:24pm.

Can someone else explain it but more easier for an 8th grader

______________________________________

In January, gasoline cost $1.05 per gallon. In July, gasoline cost $1.20 per gallon. Find the percent of increase.

Would the answer for this question be 14.3?

And how do you do percent of decrease?

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The original cost of a computer is $900. If the price is decreased by 15%, what is the sale price?

I need help with this question(:

Thank you

- Adv. Math -
**Ms. Sue**, Thursday, February 19, 2009 at 9:34pm
1.20 - 1.05 = 0.15

0.15 / 1.05 = 0.143 = 14% decrease

__________________

900 * 0.15 = 135

900 - 135 = 765

- Adv. Math -
**Ms. Sue**, Thursday, February 19, 2009 at 9:35pm
Kenya -- we have students posting upper level high school and college math. After this I suggest you use 8th grade math as your subject.

- Adv. Math -
**Kenya**, Thursday, February 19, 2009 at 9:36pm
oh ok

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