Karen proofreads 15 pages in 2 hours for $40. a. what is her proofreading rate in pages per hour? b. how much does she receive on average for a page? (if you guys can answer this today than that will be supper and if you can explain it to me than you just saved me life from the stress xd) ( if you can't understand than at least you for trying to me and don't guess)

A.7.5 pages an hour.

b. she gets paid $2.67 per page.

A rate is something per one unit. To find a rate it is the total work done or how much is received divided by how long it took or how much you earn. Basically you divide by the per "blank" that you are trying to find. This will ensure that the "per" is one.

A. For this one the total work is the number of pages read. The "per" you are trying to find is hours ap you will divide number of pages read by number of hours it took.
15 pages/2 hours = 7.5 pages per hour

B. For this question the received is how much money and the "per" is page. This means you will divide total money earned by the number of pages proofread.
$40/15pages = $2.67 per page.

I really hope this helps! If you have any questions, feel free to ask, and I can try to help!