Question

Alisha got 7 problems wrong and got 72 percent in a test. Find the number of problems in the test.

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Answer 1

let x=number of problems on the test

x-7=number of problems raul got right

(x-7)/x=72%

x-7=.72x

x-.72x=7

.28x=7

x=7/.28=25

how many problems were on the test? 25

Answer 2

Step-by-step explanation:

With 72% Correct,

14 of 100 Incorrect

is Equal to the 28%

Difference in the Earned

Score and a Perfect Score!

Thus ...

14 = 28

___ ___

X 100

1400 = 28

____ ___

X

1400 = 28X

1400 = X

______

28

50 = X