Question
Mary bought 9 kg of chicken and 6 kg of mutton for $108. If she brought 6 kg of chicken and 9 kg of mutton, she would have to pay $21 less. How much did 1 kg of mutton cost?
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Mary bought 9 kg of chicken and 6 kg of mutton for $108. If she brought 6 kg of chicken and 9 kg of mutton, she would have to pay $21 less. How much did 1 kg of mutton cost?