Four rays meet at point O. The angles between consecutive rays are in the ratio 1 : 2 : 3 : 4. What is the size of the largest angle?
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Worked Solution
Step 1: Find the total number of ratio units.
1 + 2 + 3 + 4 = 10 units
Step 2: Find the value of one unit.
360° ÷ 10 = 36°
Step 3: Find the largest angle (ratio part 4).
4 × 36° = 144°
Correct answer: 144°
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