Mdm Lim buys groceries at NTUC totalling $85. She uses a members' card that gives her a 20% discount. She pays with two $50 notes. How much change does she receive?
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Worked Solution
Step 1: Find the discount amount. 20% of $85 = 0.20 × $85 = $17.
Step 2: Find the amount Mdm Lim pays. $85 − $17 = $68.
Step 3: Find the change from two $50 notes ($100). $100 − $68 = $32.
Answer: $32
Correct answer: $32
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