Three friends share a bill at a hawker centre. Wei Hao pays 0.4 of the total. Sara pays 5/8 of the remainder. Ravi pays the rest, which is $13.50. Find the total bill.
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Worked Solution
Step 1: Wei Hao pays 0.4 of total. Remainder = 0.6 of total.
Step 2: Sara pays 5/8 of remainder. Ravi pays 3/8 of remainder = 3/8 × 0.6 = 0.225 of total.
Step 3: Ravi's share = $13.50, so 0.225 × total = 13.50 → total = 13.50 ÷ 0.225 = $60.
Answer: $60
Correct answer: $60
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