Respuesta :
Answer:
10.
Step-by-step explanation:
10 is the correct answer. Divide the total number of gallons by the amount added each hour. Remember that dividing is the same as multiplying by the reciprocal. Reduce answer if necessary.
8 ÷ 4 /5 = 8 /1 × 5 /4 = 40/ 4 = 10