Question

I need help question:how many questions would you need to get correct on a test that has 30 questions to get at least 70% correct?

Answer 1

25

Explanation:

Answer 2

21 answers.

Explanation:

First, change the percentage into a decimal point. Move the decimal point to the left two place values and drop the percentage sign:

70% = 70/100 = 0.70

Next, multiply 0.70 with the total amount of questions (30):

30 x 0.70 = 21

21 answers must be correct.

Check:

Divide 21 with 30:

21/30 = 0.70 = 70%

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