The gas tank of a riding mower holds 5 liters of gas how many 5 liter gas tanks can you fill from a full 20 liter gas tank

You can fill up 4 tanks because 20 divided by 5 is 4

The answer is c because you turn 17.5% into a decimal which gives you .175 then you times that by $361.35 which gives you 63.23625 but then you round that which gives you 63.24. then you at 63.24 pulse 361.35 and you round it which gives you $425