In a 1000 m race, A beats B by 50 m and B beats C by 20 m. In the same race, by how many meters does A beat C?	Choose the correct choice from the following choices.
A) A)69m B) B)829m C) C)822m D) D)929m E) E)132mj
By the time A covers 1000 m, B covers  (1000 - 50)= 
<gadget id="calculator"> (1000 - 50)</gadget>
<output>950</output>
950 m.   By the time B covers 1000 m, C covers  (1000 - 20)= 
<gadget id="calculator"> (1000 - 20)</gadget>
<output>980</output>
980 m.   So, the ratio of speeds of A and C=   1000/950 * 1000/980 = 1000/931 So, by the time A covers 1000 m, C covers 931 m.   So in 1000 m race A beats C by 1000 - 931= 
<gadget id="calculator">1000 - 931</gadget>
<output>69</output>
69 m.   69mnswer:69m
<result>A</result>
In a 1000 m race, A beats B by 50 m and B beats C by 20 m. In the same race, by how many meters does A beat C?