Problema Solution
a math test is worth 100 points and has 30 problems. each problem is worth either 3 points or 4 points. how many 4 point problems are there?
Answer provided by our tutors
No. of 4 point problems (x):
4x + 3(30 - x) = 100
4x + 90 - 3x = 100
x = 10
Answer: 10 problems have 4 points.