The first mission took 5*.6=<<5*.6=3>>3 days longer than anticipated

So it took 5+3=<<5+3=8>>8 days

That means the two missions took 8+3=<<8+3=11>>11 days

# Answer

11
<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
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?
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
11
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?
train