## Alli474 2 years ago 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

1. Alli474

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

2. 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: $change=\frac{ new-old }{ old }\cdot100\%$

3. Alli474

wow okay thank you. how about how to write 0.347 as a percent

4. ZeHanz

Always convert a fraction to a pecentage by multiplying with 100

5. Alli474

like 0.347*100

6. ZeHanz

Yes, so 34.7%

7. Alli474

and how would I write 65% as a fraction or mixed number in the simplest form

8. ZeHanz

Do the opposite: divide by 100, getting$\frac{ 65 }{ 100 }$then simplify...

9. Alli474

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

10. 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.

11. Alli474

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 12. 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.

13. Alli474

oh okay thank you now hope next time I do better