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solniwko [45]
3 years ago
6

Mark had 14 problems wrong on his test. his score was 72% correct. how many problems were on the test?

Mathematics
1 answer:
ella [17]3 years ago
4 0
Let x = number of problems on test
If he got 14 wrong, then x - 14 is the number correct.
\frac{x-14}{x} = .72

x - 14 = .72x
.28x - 14 = 0
.28x = 14
x = 50

The test consisted of 50 problems.
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