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first 60 kg → $5 x 60 = $300
remaining cost → 1345 - 300 = $1045
additional kg → $1045 ÷ $5.50 = 190kg
total → 190 + 60 = 250 kg
Question 4
Video explanation ↓Mr Tan received a total of $1345 for all the scrap metal he sold based on the rates below. What is the total mass of scrap metal sold by Mr Tan? (2 marks)
Answer: 250 kg