In a Primary 6 class, 20% of the students joined a CCA on Tuesday. The 20% works out to be 6 students. How many students are there in the class altogether?
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Worked Solution
Step 1: Identify what is given and what is asked.
Given: 20% of the class = 6 students. Asked: 100% of the class (the whole).
Step 2: Find what 1% represents.
1% = 6 ÷ 20 = 0.3 students.
Step 3: Multiply by 100 to get the whole.
100% = 0.3 × 100 = 30 students.
Check: 20% of 30 = 0.2 × 30 = 6 ✓
Answer: 30
Correct answer: 30
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