Question
Reggie wanted to buy some black beans. He will have $11 left if he buys 5 kg of black beans. However, he will need $7 more to buy 7 kg of black beans. What is the cost of 9 kg of black beans?
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Reggie wanted to buy some black beans. He will have $11 left if he buys 5 kg of black beans. However, he will need $7 more to buy 7 kg of black beans. What is the cost of 9 kg of black beans?