In a race of 400 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 most appropriate option
A) 1000m
B) 1200m
C) 800m
D) 950m
E) 600m
Explanation:   A:B = 400 : 360   A:C = 400 : 380   =&gt;B:C = 360:380 = 18:19   When C covers 380 m , B Covers 360 m   When C covers x m , B Covers   =&gt; x - 50 m   18x/19 = x - 50   x = 950 m   Answer: 950m
<result>D</result>
In a race of 400 m, A can beat B by 40 m and C by 20 m. In how many meter race, C will beat B by 50m ?