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denis23 [38]
4 years ago
11

On a 50 question quiz that Ms. Marshall gave, one student received a 70%. How many questions did the student get wrong?

Mathematics
2 answers:
Sphinxa [80]4 years ago
6 0

If the student got 70 percent right, he got 30 % wrong

50 *.3 = 15

He got 15 wrong

kkurt [141]4 years ago
4 0

Total number of questions were 50.

One student got 70% of questions correct.

The percentage of questions the student got wrong was 100% - 70% = 30%

The number of questions the student got wrong were 30% of 50 which is;

\frac{30}{100} × 50 = \frac{1500}{100} = 15 questions.

The student got 15 questions wrong.

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