Answer:
The wise man is 64 years old
Explanation:
"400 reduced by 3 times my age is 208"
we don't know the man's age, so we can substitute it for x. This means 400-3x=208. Using this equation, we can now solve for x to find the man's age.
400-3x=208
400-208=3x
192=3x
64=x
Checking answer:
400-3•64=
400-192=208