Problema Solution
Freddie is five times as old as Elena, but in four years, he will be 8 years more than thrice as old as her. Find the age of each now.
Answer provided by our tutors
let
f = the age of Freddie now
e = the age of Elena now
Freddie is five times as old as Elena
f = 5e
in four years, he will be 8 years more than thrice as old as her
f + 4 = 8 + 3(e + 4)
by solving the system of equations
f = 5e
f + 4 = 8 + 3(e + 4)
we find
f = 40 years
e = 5 years
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