Bonjour,
a)
4m -> 67,50
1m - 67,50/4
7m -> (67,50 * 7)/4 =>118,13€
b)
2km -> 20mn
1h = 20*3
2*3 => 6km
c)
1,5 -> 1/2h
4h = 8fois 1/2
1,5 * 8 =>12kWh
