SOLUTION: Write a proportion and then solve to find how many points a student needs to score 78% if the test is worth 50 points.

Algebra ->  Equations -> SOLUTION: Write a proportion and then solve to find how many points a student needs to score 78% if the test is worth 50 points.      Log On


   

Question 365574: Write a proportion and then solve to find how many points a student needs to score 78% if the test is worth 50 points.
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!


Hi, 

Let x represent the points needed on the 50 point test 

%2878%2F100%29+=+%28x%2F50%29

cross multiply to solve

100x = 50*78

x = 50*78/100

x = 39 points needed to score a 78%