Respuesta :
Try proportions. It can help since it's asking for the "cost". Hope this helps! :)
Each of you would have to spend $5,994.
3K/100=30 fills
30fillsx666 liters= 19980 Liters
19980 liters x $1.20/liter = $23,976
$23,976/4 = $5,994
3K/100=30 fills
30fillsx666 liters= 19980 Liters
19980 liters x $1.20/liter = $23,976
$23,976/4 = $5,994