Question
Mrs Ng has to pay $20 for 3 kg of mutton and 4 kg of beef. She has to pay $26 if she buys 4 kg of mutton and 5 kg of beef. How much does 1 kg of mutton cost?
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Mrs Ng has to pay $20 for 3 kg of mutton and 4 kg of beef. She has to pay $26 if she buys 4 kg of mutton and 5 kg of beef. How much does 1 kg of mutton cost?