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Masja [62]
4 years ago
11

An English instructor asserted that​ students' test grades are directly proportional to the amount of time spent studying. Lisa

studies 6 hr for a particular test and gets a score of 77. At this​ rate, how many hours would she have had to study to get a score of 97​?
Mathematics
1 answer:
hodyreva [135]4 years ago
5 0

Answer:

Lisa has to study for 7.55 hours.

Step-by-step explanation:

Since an English instructor has asserted that the relation between studies and test grades is proportional then we can find the time by unitary method.

∵ To score 77 Lisa has to study for 6 hours.

∴ To score 1 Lisa has to study for = \frac{6}{77}

∴ For a score of 97 Lisa has to study = \frac{6}{77}(97)

                                                             = 7.55 hours

So Lisa has to study 7.55 hours to score 97 in the test.

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