Asked by kamsy

In a test,Ben gained 90% by answering 135 questions correctly. how many question did he answer incorrectly?

5 years ago

Answered by Reiny

.9x = 135
solve for x

5 years ago

Answered by henry2,

X questions on test.
0.9x = 135.
X = 150.

150-135 = 15 questions answered incorrectly.

5 years ago

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