In Mei Ling's class, 1/3 of the students wear glasses and 2/9 of the students wear contact lenses. The rest of the students do not need any vision correction. What fraction of the class wear some form of vision correction (glasses OR contact lenses)?
Show Worked Solution
Worked Solution
Step 1: Convert 1/3 to ninths: 1/3 = 3/9 (multiply top and bottom by 3).
Step 2: Add: 3/9 + 2/9 = 5/9.
Step 3: So 5/9 of the class wear some form of vision correction.
Answer: 5/9
Correct answer: 5/9
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