Answer and Explanation
Your Answer is
Correct Answer is K
Explanation
7x is the time before shifting, the time after shifting is 8(5-x), the total time is the sum of the two, which is K
Use the following information to answer questions 41–43.
One thousand people registered to run a 5-mile road race. Each of the 1,000 people who registered paid either the early, regular, or late registration fee given in the table below.
Ninety percent of all the registered people started the race, and 95% of the people who started the race also finished the race.
42. Kirk ran the 1st x miles of the race at a rate of 7 minutes per mile and the rest of the race at a rate of 8 minutes per mile. One of the following expressions gives the total amount of minutes that it took Kirk to run the race. Which one?