Mei Ling has $30 in pocket money and her brother Ahmad has $50. Find the ratio of Mei Ling's money to Ahmad's money in its simplest form.
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Worked Solution
Step 1: Write the ratio in the order asked — Mei Ling : Ahmad = 30 : 50.\n
Step 2: Find the HCF of 30 and 50. Factors of 30: 1, 2, 3, 5, 6, 10, 15, 30. Factors of 50: 1, 2, 5, 10, 25, 50. HCF = 10.\n
Step 3: Divide both terms by 10: 30 ÷ 10 = 3, 50 ÷ 10 = 5.\n
Step 4: Simplest form = 3 : 5.\nCheck: 3 × 10 = 30, 5 × 10 = 50. ✓
Answer: 3 : 5
Correct answer: 3 : 5
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