There is very little car traffic on Happy Street. During the week, most cars pass it on Tuesday - 25. On Monday, 20% less than on Tuesday, and on Wednesday, 2 more cars than on Monday. On Thursday and Friday, it is about 10 cars each day. On the weekend, traffic drops to 5 cars per day. How many cars travel down Happy Street from Monday through Sunday?
Thoughts? Step-by-step reasoning:
On Monday there are 20 / 100 * 25 = 5 cars passing the street less than on Tuesday. So on Monday, there are 25 - 5 = 20 cars on Happy Street. On Wednesday, there are 20 + 2 = 22 cars on this street. On Thursday and Friday, there is a total of 10 * 2 = 20 cars passing. On the weekend 5 * 2 = 10 cars are passing. So from Monday through Sunday, there are 20 + 25 + 22 + 20 + 10 = 97 cars traveling down the street.
Thus, the answer is 97.