My question is: John went on a mission that was supposed to take 5 days. Instead it took 60% longer. He then had to go on a second mission which took 3 days. How long was he on missions? Your thoughts:
The first mission took 5 * .6 = 3 days longer than anticipated. So it took 5 + 3 = 8 days. That means the two missions took 8 + 3 = 11 days. The final answer: 11.