A runs times as fast as B. If A gives B a start of 80 m, how far must the winning post be so that A and B might reach it at the same time?	Choose one.
A) 200
B) 378
C) 277
D) 298
E) 797
Explanation:   Ratio of the speeds of A and B =5 : 1 = 5 :3   Thus, in race of 5 m, A gains 2 m over B.   2 m are gained by A in a race of 5 m.   80 m will be gained by A in race of \inline \fn_jvn {\color{Black} \left ( \frac{5}{2}\times 80 \right )} m =200m   \inline \fn_jvn {\color{Black} \therefore }Winning post is 200 m away from the starting point.   200nswer: 200) 200 m
<result>A</result>
A runs times as fast as B. If A gives B a start of 80 m, how far must the winning post be so that A and B might reach it at the same time?