A gives B a start of 200m and still wins a km race by 200m. B gives a start of 100m and still wins by 100m in another km race with C. How much start should A give C in a km race in order to beat him by 250m?

A gives B a start of 200m and still wins a km race by 200m. B gives a

1.	A gives B a start of 200m and still wins a km race by 200m. B gives a start of 100m and still wins by 100m in another km race with C. How much start should A give C in a km race in order to beat him by 250m?
A.	270
B.	480
C.	520
D.	230
Answer» B. 480