1、1Simon rents a car in the city to go skiing in the mountains 100 kilometers away. He stops halfway to pick up his girlfriend Nina at her house, and drives the remaining 50 kilometers with her. On their way back, Simon drops Nina at her house and drives back to the city alone. He returns the car and
2、pays $50 for the rental and $10 for the gas. Simon and Nina share the expenses equitably. How much should Nina pay? remain rimein 剩下, 余留rental rentl 租费equitable ekwitbl公正的, 合理的2An alarm clock runs 4 minutes slow every hourIt was set right 3.5 hours agoNow another clock，which is correct，shows noonIn
3、how many minutes，to the nearest minute，will the alarm clock show noon？ 3If we add a mans age and a womans age today, we obtain 91. The man is now twice as old as the woman was when he was as old as she is now. How old are each of them today? obtain btein 获得, 得到;答案：1、答案：Simon 一起随车总共走了 200km，而 Nina只随车走了 100km，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。2、153、39,52一个 man M 和一个 woman W 的年龄之和为 91。M此时的岁数是 M 在 W 此时的岁数时 W 岁数的两倍。x+y=91x = 2(y-(x-y)x=52,y=39
