In a race of 200 m, A can beat B by 40 m and C by 20 m. In how many meter race, C will beat B by 50m ?
Choose the correct choice from the following.
A) 225 m B) 285 m C) 200 m D) 250 m E) 150 m
Explanation:   A:B = 100 : 60   A:200 m = 100 : 80   =&gt;B:200 m = 60:80 = 3:4   When 200 m covers 80 m , B 200 movers 60 m   When 200 m covers x m , B 200 movers   =&gt; x - 50 m   3x/4 = x - 50   x = 200 m   Answer: 200 m
<result>C</result>
In a race of 200 m, A can beat B by 40 m and C by 20 m. In how many meter race, C will beat B by 50m ?