anonymous
  • anonymous
okay I took this test I got these questions wrong I was wondering if any of you could help me better understand what it is I am supposed to do
Pre-Algebra
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
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anonymous
  • anonymous
here is one of them find the percent increase from 125 to 130
ZeHanz
  • ZeHanz
You must be careful with these kind of problems: because it increases from 125 to 130, you'll have to compare the increase of 5 with the original number (125). So 125 stands for 100%. Some find this formula handy: \[change=\frac{ new-old }{ old }\cdot100\%\]
anonymous
  • anonymous
wow okay thank you. how about how to write 0.347 as a percent

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ZeHanz
  • ZeHanz
Always convert a fraction to a pecentage by multiplying with 100
anonymous
  • anonymous
like 0.347*100
ZeHanz
  • ZeHanz
Yes, so 34.7%
anonymous
  • anonymous
and how would I write 65% as a fraction or mixed number in the simplest form
ZeHanz
  • ZeHanz
Do the opposite: divide by 100, getting\[\frac{ 65 }{ 100 }\]then simplify...
anonymous
  • anonymous
when something asks what is 159 is 30% of a number that like when you said multiply 30% by one hundred sorry by the way am struggle in math and I am so happy you are helping understand it
ZeHanz
  • ZeHanz
If 159 is 30% of a number and you want to know what that number is: Divide 159 by 30 to get 1%. Then multiply by 100.
anonymous
  • anonymous
ok Jackets are on sale for 25% off. If the original price of a jacket is $120, what is the sale price? how would I do this
ZeHanz
  • ZeHanz
So $120 stands for 100%. If there is 25% off, the price goes down with a quarter, which is $30. New price: $90. Another way of doing this: look at what will be left: 25% off means: there is only 75% left, or three quarters (0.75). So 0.75*120=90. New price is $90.
anonymous
  • anonymous
oh okay thank you now hope next time I do better

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