Convert 7 minutes and 6 seconds to seconds first.

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So, you can try to apply the unitary method to such questions.

7 min and 6 sec = 426 secs

Since 426 secs are gained in 6 days and the rate of gain is constant. We can calculate the seconds gained in 1 day, which is

426/6 = 71 sec

71/60 = 1 min 11 sec

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Thank you!