Bradley P. answered 03/07/18
Tutor
New to Wyzant
Math Tutor (Prealegebra to Calculus 1&2)
You might have misplaced the "is" in the question.
I interpreted it instead like this, "How old am I if 400 reduced by 4 times my age is 60?"
"my age" = x
4 times "my age" = 4*x
400 reduced by "4 times my age" = 400 - 4x
All of that is 60.
You just have to figure out an equation and solve for x (my age).