22 of them for a 75% pass rate providing that the remaining 66 questions are all correct
22 questions
22
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.
On a 22 question test, if you miss one question (wich can be written as 21/22 -- 21 divided by 22), you will have a 95.45, an A, according to a calculator. So, 100-95.45 (100 minus 95.45) is about 4.55: therefore, on a 22 question test, each question is worth about 4.55 points. :)
22 of them for a 75% pass rate providing that the remaining 66 questions are all correct
22 questions
22
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.
On a 22 question test, if you miss one question (wich can be written as 21/22 -- 21 divided by 22), you will have a 95.45, an A, according to a calculator. So, 100-95.45 (100 minus 95.45) is about 4.55: therefore, on a 22 question test, each question is worth about 4.55 points. :)
So basically there was a test with 72 questions and you got x number of them wrong, and got 70%. So... You have to find out what 70% of 72 is. All you have to do is multiply 0.70 by 72. Which equals 50.4 50 represents the number of questions you got right out of 72. So, 50/72 = roughly 70% -------------------------------------------------------------------------------------------------- 72 - 50 = 22 SO. To answer you question, you can miss 22 questions out of 72 to get 70 percent. Why does it sound like you're trying to go all lazy on a test?
22 of them.
22
7 wrong out of 22 questions = 31.8% wrong. 15 correct out of 22 questions = 68.2% correct. I hope it wasn't a math test.
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