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Alli474

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

  • one year ago
  • one year ago

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  1. Alli474
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    here is one of them find the percent increase from 125 to 130

    • one year ago
  2. ZeHanz
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    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: \[change=\frac{ new-old }{ old }\cdot100\%\]

    • one year ago
  3. Alli474
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    wow okay thank you. how about how to write 0.347 as a percent

    • one year ago
  4. ZeHanz
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    Always convert a fraction to a pecentage by multiplying with 100

    • one year ago
  5. Alli474
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    like 0.347*100

    • one year ago
  6. ZeHanz
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    Yes, so 34.7%

    • one year ago
  7. Alli474
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    and how would I write 65% as a fraction or mixed number in the simplest form

    • one year ago
  8. ZeHanz
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    Do the opposite: divide by 100, getting\[\frac{ 65 }{ 100 }\]then simplify...

    • one year ago
  9. Alli474
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    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

    • one year ago
  10. ZeHanz
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    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.

    • one year ago
  11. Alli474
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    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

    • one year ago
  12. ZeHanz
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    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.

    • one year ago
  13. Alli474
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    oh okay thank you now hope next time I do better

    • one year ago
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