James and 4 of his friends volunteered to plant flowers. In 2 days, they were able to plant a total of 200 flowers. If each of them planted the same number of flowers, how many flowers did James plant in a day? Let's think first. Chain of thought:
There were 1 + 4 = 5 of them who volunteered to plant flowers. Each day, the 5 of them planted a total of 200 / 2 = 100 flowers. Thus, James planted 100 / 5 = 20 flowers in a day.
Therefore, the answer is 20.