Give the step-by-step reasoning process and then the final answer. Bronson decides to collect Oak Leaves from around his Neighborhood. He collects 12 on Thursday and 13 on Friday. 20% are Brown and 20% are Green. The rest are yellow. How many yellow leaves does he collect?
He collects 25 leaves because 12 + 13 = 25. 60% of them are yellow because 100 - 20 - 20 = 60. He collects 15 yellow leaves because 25 x .6 = 15.
The final answer: 15.