Bonjour,
1) 800 g de bronze → 730 g de cuivre
1 300 g → ?
730 g * 1 300 / 800 = 1 186,25 g
2) 16 crêpes → 250 g
42 crêpes → ? g
250 g * 42 / 16 = 656,25 g
3) 1 h 15 = 1 h + (15 / 60) = 1,25 h
2 h 32 min = 2 h + (32 / 60) = 2,53 h
3 h 42 min = 3 h + (42 / 60) = 3,7 h
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Bonjour,
1) 800 g de bronze → 730 g de cuivre
1 300 g → ?
730 g * 1 300 / 800 = 1 186,25 g
2) 16 crêpes → 250 g
42 crêpes → ? g
250 g * 42 / 16 = 656,25 g
3) 1 h 15 = 1 h + (15 / 60) = 1,25 h
2 h 32 min = 2 h + (32 / 60) = 2,53 h
3 h 42 min = 3 h + (42 / 60) = 3,7 h