Question
Mrs Chen has to pay $54 for 3 kg of pork and 4 kg of mutton. She has to pay $70 if she buys 4 kg of pork and 5 kg of mutton. How much does 1 kg of pork cost?
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Mrs Chen has to pay $54 for 3 kg of pork and 4 kg of mutton. She has to pay $70 if she buys 4 kg of pork and 5 kg of mutton. How much does 1 kg of pork cost?