He needs about 743 weeks to figure out the math problem first, then it would take him about 24 years because he keeps spending it on other stuff.
Rule:
(xᵃ)ᵇ = x⁽ᵃ * ᵇ⁾
(x⁴)³ = x⁽⁴ * ³⁾ = x¹²
Step-by-step explanation:
To solve this, you either need x or y. So x or y can be the missing values. The most you can do is simply move one of the terms to the other side.