问答题Simon rents a car in the city to go skiing in the mountains 100 kilometres away. He stops halfway to pick up his girlfriend Nina at her house, and drives the remaining 50 kilometres with her. On their way back, Simon drops Nina at her house and drives back to the city alone. He returns the car and pays $50 for the rental and $10 for the gas. Simon and Nina share the expenses equitably. How much should Nina pay?
问答题
Simon rents a car in the city to go skiing in the mountains 100 kilometres away. He stops halfway to pick up his girlfriend Nina at her house, and drives the remaining 50 kilometres with her. On their way back, Simon drops Nina at her house and drives back to the city alone. He returns the car and pays $50 for the rental and $10 for the gas. Simon and Nina share the expenses equitably. How much should Nina pay?
参考解析
解析：
Simon一起随车总共走了200米，而Nina只随车走了100米，车费总共花了50+10=60元，如果公正地分摊这笔费用的话，Simon应该付40元，而Nina付20元。
Simon一起随车总共走了200米，而Nina只随车走了100米，车费总共花了50+10=60元，如果公正地分摊这笔费用的话，Simon应该付40元，而Nina付20元。
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