There were 1 + 4 = <<1+4=5>>5 of them who volunteered to plant flowers.

Each day, the 5 of them planted a total of 200/2 = <<200/2=100>>100 flowers.

Thus, James planted 100/5 = <<100/5=20>>20 flowers in a day.

# Answer

20
<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
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?
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
20
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?
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