Big Book Test 11 Sec 5 Q 18

[phobia851]

What is the best way/appraoch to these problems? I don’t even know where to start with these…

[Leaderboard]

Convert 7 minutes and 6 seconds to seconds first.

[vision_35]

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

[phobia851]

Thank you!