Question
David wanted to buy some red beans. He will have $19 left if he buys 5 kg of red beans. However, he will need $7 more to buy 7 kg of red beans. What is the cost of 11 kg of red beans?
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David wanted to buy some red beans. He will have $19 left if he buys 5 kg of red beans. However, he will need $7 more to buy 7 kg of red beans. What is the cost of 11 kg of red beans?