A test has twenty questions worth 100 points. The test consists of true/false questions worth 3 points each and multiple choice questions worth 11 points each. How many multiple choice questions are on the test?
11 pointers =x value = 11 x
3 pointers =(20-x) value = 3(20-x)
summed = 100
11x + 3 (20-x) = 100 solve for x this is the number of 11 pointers