bonjour
1) 3/4 + 1/5 = 15/20 + 4/20 = 19 /20
natation = 1/20
2 ) 1/20 représente 100 m
20/20 = 2000 m
distance totale = 2 000 m
vélo = 2 000 x 3/4 = 1 500 m
course = 2 000 : 5 = 400 m
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bonjour
1) 3/4 + 1/5 = 15/20 + 4/20 = 19 /20
natation = 1/20
2 ) 1/20 représente 100 m
20/20 = 2000 m
distance totale = 2 000 m
vélo = 2 000 x 3/4 = 1 500 m
course = 2 000 : 5 = 400 m