Question
Pierre wanted to buy some peppercorns. He will have $18 left if he buys 2 kg of peppercorns. However, he will need $7 more to buy 7 kg of peppercorns. What is the cost of 7 kg of peppercorns?
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Pierre wanted to buy some peppercorns. He will have $18 left if he buys 2 kg of peppercorns. However, he will need $7 more to buy 7 kg of peppercorns. What is the cost of 7 kg of peppercorns?