Question
Mrs Ang has to pay $40 for 3 kg of beef and 4 kg of chicken. She has to pay $52 if she buys 4 kg of beef and 5 kg of chicken. How much does 1 kg of beef cost?
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Mrs Ang has to pay $40 for 3 kg of beef and 4 kg of chicken. She has to pay $52 if she buys 4 kg of beef and 5 kg of chicken. How much does 1 kg of beef cost?