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OpenStudy (anonymous):
Change 7.5% into a decimal.
OpenStudy (anonymous):
Do you know how? @foofoo787
OpenStudy (anonymous):
oh yes is it 0.075?
OpenStudy (anonymous):
Yes, now multiply 65 by the decimal of 7.5%
OpenStudy (anonymous):
4.875
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OpenStudy (anonymous):
Yes, now add 65 and that number.(Round the number to the nearest tenth)
OpenStudy (anonymous):
69.875
OpenStudy (anonymous):
69.88?
OpenStudy (anonymous):
Yup.
OpenStudy (anonymous):
:'D THANK YOUUUUUUU i really wanna hug you
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OpenStudy (mathstudent55):
Correct. You're getting the hang of it.
OpenStudy (anonymous):
no problem :)
OpenStudy (mathstudent55):
Remember these things:
1) To find a percentage of a number, change the percent to a decimal and multiply by the number.
2) If it's a tax, add that percentage to the number.
3) If it's a discount, subtract the percentage from the number.
OpenStudy (anonymous):
oh. I think that was my problem. I didn't know if i should add or subtract
OpenStudy (anonymous):
Here is a sample problem. Try to do it by yourself first.
26% off of $112.25
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OpenStudy (anonymous):
ok:)
OpenStudy (mathstudent55):
Example 1.
$50 book with 6% tax.
6% * $50 = 0.06 * 50 = $3 (this is the tax)
Final price is $50 + $3 = $53 (price of book plus tax).
Example 2.
$20 ticket with 8% discount.
8% * $20 = 0.08 * 20 = $1.60 (this is amount of discount)
$20 - $1.60 = $18.40 (this is the final price after taking off the discount)