Question: Sam ran 3 miles on Monday, Wednesday and Friday.  On Tuesday and Thursday, Sam ran 5 miles.  How many miles did Sam run this week?
Answer: 
On Monday, Wednesday and Friday, Mike ran 3 * 3 = 9 miles
On Tuesday and Thursday, he ran 5 * 2 = 10 miles
During the 5 days together, he ran a total of 10 + 9 = 19 miles