How many question can you miss to get a 70 percent on a 30 question test?

Answer 1

To find the answer...

Percentages under 100 are entered as .xx in a calculator, so 10% is .10, 22% is .22, 76% is .76, and over 100% is x.xx, so 140% is 1.40, and so on.

Take that decimal percent and multiply that by the number of questions on the test, and that answer is how many you have to get CORRECT, so simply take the total number of questions, subtract the correct amount shown on the calculator, and that's how many you can miss.

Examples:

70% of 30? .70 * 30 = 21, so 21 must be correct out of 30, so you can miss 9.

For my electronics tests, I have 30 questions, and I have to get at least 60% to pass. So .60 * 30 = 18 correct out of 30, so 30 - 18 = 12, I can miss 12.

Last example:

You need 80% to pass with 40 questions.

.80 * 40 = 32 correct answers, 40 total - 32 correct = 8 can be wrong.

Be sure to key in the percentage as a decimal.

Answer 2

7