Question

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

Answer 1

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

Answer 2

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:
\[change=\frac{ new-old }{ old }\cdot100\%\]

Answer 3

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

Answer 4

Always convert a fraction to a pecentage by multiplying with 100

Answer 5

like 0.347*100

Answer 6

Yes, so 34.7%

Answer 7

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

Answer 8

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

Answer 9

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

Answer 10

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.

Answer 11

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

Answer 12

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.

Answer 13

oh okay thank you now hope next time I do better