11. |
In a 300 m race A beats B by 22.5 m or 6 seconds. B's time over the course is: |
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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? |
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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: |
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