Bonjour
exercice 55
4/5 d'une heure =>
(60*4)/5 =>48mn
1/5 d'une heure =>
(60*1)/5 => 12mn
3h+1/5 h => (60*3) +12=> 192mn
48 +48 + 48 +48 =192
Il a donné 4 cours
Exercice 56
1L = 100 cL
2/3L => (100*2)/3 => 66,67 cL
1/9 L = 100/9 =>11,11 cL
66,67 / 11 ,11 => 6 verres
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Bonjour
exercice 55
4/5 d'une heure =>
(60*4)/5 =>48mn
1/5 d'une heure =>
(60*1)/5 => 12mn
3h+1/5 h => (60*3) +12=> 192mn
48 +48 + 48 +48 =192
Il a donné 4 cours
Exercice 56
1L = 100 cL
2/3L => (100*2)/3 => 66,67 cL
1/9 L = 100/9 =>11,11 cL
66,67 / 11 ,11 => 6 verres