Missed questions

Question

out of 55 questions I got a 67 how many questions did I get right how many did I miss

Answer 1

Assuming that 67 is a percentage (i.e. 67 out of 100 pts), all questions are weighted equally with no partial credit, and your grade is a result of rounding to the nearest whole number, then the procedure is as follows:

1. x/55 = 67/100 ... x is and approximation of the number of questions you got correct
2. x(100) = (55)(67) ... Cross multiplication
3. x = [(55)(67)]/100 ...Dividing both sides by 100
4. x = 36.85 ~= 37 ... Evaluating with your calculator you get a non-whole number of questions correct, which is not possible. So you round to the nearest whole number (as a verification [37/55]*100 = 67.27)
5. #missed = 55 - 37 = 18 ... Subtracting the number you got correct from the total number of questions you get 18 as the number questions the you missed.

Answer 2

You cannot get 67 out of 55...

You can get 55 out of 67, which means you missed 12