Question
Mrs Gwen bought 7 kg of crabstick at $7 per kilogram and 3 kg of fishballs at $5 per kilogram. She paid for these items with 4 pieces of $20 notes. How much change did she receive?
4 m

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Mrs Gwen bought 7 kg of crabstick at $7 per kilogram and 3 kg of fishballs at $5 per kilogram. She paid for these items with 4 pieces of $20 notes. How much change did she receive?