Ben is 3 times as old as Daniel and is also 4 years older than Daniel.
Let Ben's age be b, let Daniel's age by d. We're given:
b = 3d
b = d + 4
Substitute (1) into (2)
3d = d + 4
Type this equation into our search engine, and we get d = 2.
Substitute this into equation (1), and we get:
b =...