Bonjout,
Exercice 6
1kw = 1 000w
2 500 w = 2,5kw
2, 5* 0,1325 =0,33€
Exercice 7
0,4kw / h
=>
0,4*2=> 0,8 kw/h
=> 800w/h
Exercice 8
5,4L ->1mn
1L -> 1/5,4
108L -> (1*108) / 5,4 =>20mn
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Bonjout,
Exercice 6
1kw = 1 000w
2 500 w = 2,5kw
2, 5* 0,1325 =0,33€
Exercice 7
0,4kw / h
=>
0,4*2=> 0,8 kw/h
=> 800w/h
Exercice 8
5,4L ->1mn
1L -> 1/5,4
108L -> (1*108) / 5,4 =>20mn