if Irina ran 1/2 miles in 3 1/2 minutes then 1 mile would be covered in
= 1/1/2 * 3 1/2 minutes
= 2 * 7/2 minutes
= 7 minutes
If Irina covers 1 mile in 7 minutes then 2 miles will be covered in
= 2 * 7 minutes
= 14 minutes
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