Respuesta :

1.91 gallons left
3.8-1.89= 1.91 gallons
98mharoun

Answer:

1.91

Step-by-step explanation:

Duncan had 3.8 and used 1.89 obviously we can't subtract right now so we have to add a 0 to 3.8 so it would 3.80 - 1.89 = 1.91