Bonjour,
a- 1,64 h = 0,64 x 60 = 38,4 minutes
0,4 = 0,4 x 60 = 24 secondes
Transformation : 1h 38 min 24 sec
b- 2,415 = 0,415 h = 0,415 x 60 = 24, 9 minutes
0,9mn = 0,9 x 60 = 54 secondes
Transformation : 2h 24mn 54s
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Bonjour,
a- 1,64 h = 0,64 x 60 = 38,4 minutes
0,4 = 0,4 x 60 = 24 secondes
Transformation : 1h 38 min 24 sec
b- 2,415 = 0,415 h = 0,415 x 60 = 24, 9 minutes
0,9mn = 0,9 x 60 = 54 secondes
Transformation : 2h 24mn 54s