Answer:
B) 1/2 barrel/hour
Step-by-step explanation:
1/3 divided by 2/3 = 1/3 * 3/2 = (1*3)/(3*2) = 3/6 = 1/2, therefore the correct unit rate is B) 1/2 barrel/hour
1/2
1/3 x 3/2 = 1/2
