简单的数学题three girls a,b and crun in a 100m race.when a finishe
简单的数学题
three girls a,b and crun in a 100m race.when a finishes,b is 10 m behind a and when b finishes,c is 20m behindb.how far in meters was c from a when a finished.(let us assume all the atheles run at a constant speed)
three girls a,b and crun in a 100m race.when a finishes,b is 10 m behind a and when b finishes,c is 20m behindb.how far in meters was c from a when a finished.(let us assume all the atheles run at a constant speed)
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你能帮帮他们吗