Bob enters cycling competitions every single week and hopes to win the 100 dollar grand prize each time. For the first 2 weeks, he managed first place and got 100 dollars each week. He is saving up for a puppy that costs 1000 dollars. What is the minimum number of additional weeks Bob must win first place? Give me reasons, before answering the question
Two weeks already passed and Bob has 200 dollars. Bob needs 1000 - 200 = 800 more dollars. Bob needs to win the competition for at least 800 / 100 = 8 more weeks. So the final answer is 8.