James decides to cut down some trees. In the first 2 days, he cuts down 20 trees each day. For the next 3 days his 2 brothers help him cut down trees. They cut 20% fewer trees per day than James. How many total trees were cut down? Let's think first. Chain of thought:
He cuts down 2 * 20 = 40 trees by himself. Each of his brothers cuts down 20 * .2 = 4 fewer trees per day. So they each cut down 20 - 4 = 16 trees. So for the next 3 days they cut down 20 + 16 * 2 = 52 trees per day. So they cut down 40 + 52 * 3 = 196 trees.
Therefore, the answer is 196.