Mr. Martin’s math test, which is worth 100 points, has 35 problems. Each problem is worth either 5 points or 2 points. Let x = the number of questions worth 5 points.
Let y = the number of questions worth 2 points.
x + y = 35,
5x + 2y = 100
How many problems of each point value are on the test?
A. 10 problems worth 5 points and 25 problems worth 2 points
B. 15 problems worth 5 points and 20 problems worth 2 points
C. 20 problems worth 5 points and 15 problems worth 2 points
D. 25 problems worth 5 points and 10 problems worth 2 points