expert please explain me how I got free minutes 16 seconds by converting 0.054 hour

Dear Student
0.054 hrs = 0.054 x 60 min
                = 3.24 minutes
0.24 min = 0.24 x60 sec
               = 14.4 sec

So  0.054 hours =  3 minutes and 14.4 seconds

Regards

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