Mr Tan, Mrs Tan and Mei Ling shared a sum of money in the ratio 5 : 3 : 2. Mei Ling received $42 less than Mr Tan. What was the total amount of money they shared?
Show Worked Solution
Worked Solution
Step 1: Let 1 unit (u) be the value each ratio part stands for. Mr Tan = 5u, Mrs Tan = 3u, Mei Ling = 2u.
Step 2: Mei Ling received $42 less than Mr Tan, so Mr Tan − Mei Ling = 5u − 2u = 3u = $42.
Step 3: 1u = $42 ÷ 3 = $14.
Step 4: Total = (5 + 3 + 2)u = 10u = 10 × $14 = $140.
Answer: $140
Correct answer: $140
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