lisa studies 9 hrs. for a test and gets a score of 72. at this rate, how many hrs. would she have had to study to get a score of 92?
Strange question. Test scores aren't usually totally dependent upon the time spent studying.
However, using your figures, Lisa gets 1 point for each 0.125 of an hour she studies. With that (il)logic, multiply 0.125 by 92 to find the total hours needed.
about 10.2
To find out how many hours Lisa would have to study to get a score of 92, we can set up a proportion using the study hours and the test scores.
Let's assume that Lisa's studying time and her scores are directly proportional. In other words, we can write the proportion as:
(study hours) / (score) = (study hours) / (score)
We know that Lisa studied for 9 hours and got a score of 72:
9 / 72 = x / 92
To find x, the number of hours she needs to study, we'll cross-multiply and solve for x:
9 * 92 = 72 * x
828 = 72 * x
Now, divide both sides by 72 to solve for x:
828 / 72 = x
11.5 = x
Therefore, Lisa would have to study for approximately 11.5 hours to get a score of 92.