Jenna works as a truck driver. She gets paid $0.40 cents per mile. If she drives 400 miles one way, how much does she get paid for a round trip? Let's think first. Chain of thought:
First find the total number of miles Jenna drives: 400 miles / way * 2 ways = 800 miles. Then multiply that number by her pay per mile to find her total pay: 800 miles * $0.40 / mile = $320.
Therefore, the answer is 320.