Calculus: <<4=4>>4 years

Algebra: 4(2)=8 years

Statistics: 8(5)=<<8*5=40>>40 years

Total number of years taught: 4+8+40=<<4+8+40=52>>52 years

# Answer

52
<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Devin teaches one math course per year. He taught Calculus for 4 years, Algebra for twice as many years, and Statistics for 5 times as long as he taught Algebra. How many years has Devin taught?
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
52
Devin teaches one math course per year. He taught Calculus for 4 years, Algebra for twice as many years, and Statistics for 5 times as long as he taught Algebra. How many years has Devin taught?
train