A is faster than B. A and B each walk 2...

A is faster than B. A and B each walk 24km. The sum of their speeds is 7km/hr and the sum of times taken by them is 14 hours. Then A's speed is equal to

3 `"km"//"hr"`

4 `"km"//"hr"`

5 `"km"//"hr"`

6 `"km"//"hr"`

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