He gets 1000*.1=$<<1000*.1=100>>100 a year

So after 3 years, he gets 100*3=$<<100*3=300>>300

So he has 300+1000=$<<300+1000=1300>>1300

# Answer

1300
<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
John invests in a bank and gets 10% simple interest.  He invests $1000.  How much money does he have after 3 years?
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
1300
John invests in a bank and gets 10% simple interest.  He invests $1000.  How much money does he have after 3 years?
train