math
posted by R .
algebra in 8th your teacher is giving you a test worth 100 points containing 40 questions. There are twopoint and fourpoint questions on the test. how many of each type of questions are on the test?

x two pointers and (40 x) four pointers
2x + 4(40x) = 100
2x + 160  4x = 100
2x = 60 etc