Question
Olivia bought 9 kg of beef and 2 kg of pork for $89. If she brought 2 kg of beef and 9 kg of pork, she would have to pay $35 less. How much did 1 kg of beef cost?
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Olivia bought 9 kg of beef and 2 kg of pork for $89. If she brought 2 kg of beef and 9 kg of pork, she would have to pay $35 less. How much did 1 kg of beef cost?