Write a proportion to find how many points xx a student needs to score on a test worth 80 points to get a test score of 80%.
2 answers:
Xx/80 = 80/100 . . . . . . . . . your proportion
Answer:cross multiply to solve
100x = 50*78
x = 50*78/100
x = 39 points needed to score a 78%
Step-by-step explanation:hope this helps:D
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