Question

Kevin is
\[3\] years older than Daniel. Two years ago, Kevin was
\[4\] times as old as Daniel.
Let
\[k\] be Kevin's age and let
\[d\] be Daniel's age.
Which system of equations represents this situation?

Answer 1

Let k = Kevin's age and d = Daniel's age.

System:
k = d + 3
k - 2 = 4(d - 2)

(Equivalently: k - d = 3 and k - 2 = 4d - 8.)