SOLUTION: A student missed 5 problems on an English test and received a grade of 64%. If all the problems were of equal value, how many problems were on the test? Round off your answer to t
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Question 1019283: A student missed 5 problems on an English test and received a grade of 64%. If all the problems were of equal value, how many problems were on the test? Round off your answer to the nearest integer.
Answer by JoelSchwartz(130) (Show Source): You can put this solution on YOUR website!
x=total number of questions
x-5=total number of questions that the student answered correctly
y=number of points each question is worth
yx=100
y(x-5)=64
yx-5y=64
100-5y=64
-5y=64-100
-5y=-36
y=36/5
y=7+.2
y=7.2
7.2x=100
x=100/7.2
The number of questions rounded up to the nearest integer is 14.
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