Problema Solution
A test has 20 questions worth 100 points. The tests consists if True/False questions worth 3 points each and multiple choice questions worth 11 points each. How many multiple choice questions are in the test?
Answer provided by our tutors
let 'x' represent the number of True/False questions, then '20-x' represents the number of multiple choice questions
100 = 3x + 11(20-x)
solving for 'x' we have x=15
20-15 = 5
the test has 5 multiple choice questions