The pie chart shows the sports CCAs chosen by $600$ P6 students at Tampines Primary School. The four slices are Basketball ($20\%$), Badminton ($25\%$), Swimming ($15\%$) and Football. Of the students who chose Football, $60\%$ are boys. How many GIRLS chose Football?
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Worked Solution
Step 1: The four slices sum to 100%. Find the Football percentage: Football % = $100\% - 20\% - 25\% - 15\% = 40\%$.\n
Step 2: Convert the Football percentage to a count of students: $40\% \times 600 = 0.40 \times 600 = 240$ students chose Football.\n
Step 3: Of these 240 Football students, 60% are boys, so the GIRLS fraction is $100\% - 60\% = 40\%$.\n
Step 4: Compute the number of girls in Football: $40\% \times 240 = 0.40 \times 240 = 96$ girls.\nCheck: 96 girls + (60% × 240 = 144 boys) = 240 Football students; 240 = 40% × 600. ✓
Answer: 96 girls
Correct answer: 96 girls
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