A scientists used 2 gallons of liquid for every 6 hours he works. he uses of a gallon each hour he works.

0.333

Step-by-step explanation:

We are looking for gallons per hour so

gallons/hour

2 gallons/6 haours

2/6 = 0.333   OR  33.333%

1/3 of a gallon each hour

Step-by-step explanation:

Step 1:

2 gallons per 6 hours        Given

Step 2:

2/6       Divide

Step 3:

1/3      Simplify

1/3 of a gallon each hour

Hope This Helps :)