11. 

In a 300 m race A beats B by 22.5 m or 6 seconds. B's time over the course is:

A. 86 sec
B. 80 सेकंड
C. 76 सेकंड
D. इनमे से कोई नहीं

12. 

A runs 1 times as fast as B. If A gives B a start of 80 m, how far must the winning post be so that A and B might reach it at the same time?

A. 200 m
B. 300 मीटर
C. 270 मीटर
D. 160 मीटर

13. 

In a 100 m race, A can beat B by 25 m and B can beat C by 4 m. In the same race, A can beat C by:

A. 21 m
B. 26 मीटर
C. 28 मीटर
D. 29 मीटर