A runs one time faster than B. How far must the winning post be for A and B to reach it at the same time if A gives B an 80-meter start?
A. 200 m
B. 300 m
C. 270 m
D. 160 m
Answer:A
A runs one time faster than B. How far must the winning post be for A and B to reach it at the same time if A gives B an 80-meter start?
A. 200 m B. 300 m C. 270 m D. 160 m
Explanation: The ratio of A and B's speeds is 5/3:1 = 5:3.As a result, A gains 2 metres over B in a 5 metre race.A gains 2 metres in a 5 metre race.In a race of 5/2 x 80 m = 200 m, A will gain 80 metres.The starting position is 200 metres distant from the winning post.