Răspuns :
18 h 15 ' = 17h 60'+15'=
=17h 75 '
6h 45'
---------------------
11h 30'
=17h 75 '
6h 45'
---------------------
11h 30'
6,45-7,00= 15 min
7,00-18,00=11 ore
18,00-18,15= 15 min
Total 11 ore si 30 minute.
7,00-18,00=11 ore
18,00-18,15= 15 min
Total 11 ore si 30 minute.