英语翻译题1:Anathlete`s target heart rate,in bests per minute,is

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英语翻译
题1:Anathlete`s target heart rate,in bests per minute,is 80% of the theoretical maximum heart rate.The maximum heart rate id found by subtracting the athlete`s age,in years,from 220.To the nearest whole number ,what is the target heart rate of an athlete who is 26 years old?
(A)134 (B)155 (C)176 (D)194 (E)243
题2：Josh and Mick live 13 miles apart.Yesterday Josh started to ride his bicycle toward Mick`s house.A litter later Mick started to ride his bicycle toward Josh`s house.When they met,Josh had ridden for twice the length of time as Mick and at four-fifiths of Mick`s rate.How many miles had Mike ridden when they met?
(A)4 (B)5 (c)6 (D)7 (E)8
求中文翻译,
请把第2题翻译地再详细一些.没看懂

B 大意是一个运动员的最佳心跳状态是最大值的80％,最大值是220减去自身年龄
B 大意是Josh 骑了Mick的两倍时间,速度是Mick的4／5,假设M骑了X千米,J应该骑了8X／5千米,加起来是13 千米,则X得5

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