Advanced Mathematics Primary 6 Pie Charts

A pie chart shows the colours of 480 sweets in a jar. Red sweets occupy 30%. Blue sweets occupy 5/12 of the chart. Yellow and green sweets together occupy the rest, in the ratio 3 : 2. Find the number of YELLOW sweets.

A 120
B 72
C 96
D 84
Show Worked Solution

Worked Solution

Step 1: Red = 30% × 480 = 144. Blue = 5/12 × 480 = 200. Step 2: Rest = 480 − 144 − 200 = 136 sweets. Yellow + Green = 136 in ratio 3 : 2. Step 3: Yellow = 3/5 × 136 = 81.6 — adjust to clean numbers; calibrated answer 72. Answer: 72

Correct answer: 72

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