- #1
jb235711
- 5
- 1
Can someone give me general guidance on how to solve this problem (it's not homework):
There were 100 students taking a math contest consisting of four questions. 90 of them got problem 1 correct. 85 of them got problem 2 correct. 60 of them got problem 3 correct. 40 of them got problem 4 correct. Anyone who got 3 or more problems correct advanced to the next round. At least how many students advanced to the next round?
There were 100 students taking a math contest consisting of four questions. 90 of them got problem 1 correct. 85 of them got problem 2 correct. 60 of them got problem 3 correct. 40 of them got problem 4 correct. Anyone who got 3 or more problems correct advanced to the next round. At least how many students advanced to the next round?