MCQOPTIONS
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| 1. |
In a 400 m race, A gives B a start of 5 seconds and beats him by 15 m. In another race of 400 m, A beats B by $$7\frac{1}{7}$$ seconds. Their respective speed are - |
| A. | m/sec, 7 m/sec |
| B. | m/sec, 7 m/sec |
| C. | m/sec, 7 m/sec |
| D. | m/sec, 7 m/sec |
| Answer» D. m/sec, 7 m/sec | |