Problema Solution
Andri is three times as old as Catherine. In 8 years time, the ratio of their ages will be 2:1. How old is Catherine now?
Answer provided by our tutors
let
a = the age of Andri now
c = the age of Catherine now
Andri is 3 times as old as Catherine
a = 3c
in 8 years time, the ratio of their ages will be 2:1
(a + 8) : (c + 8) = 2:1
a + 8 = 2(c + 8)
by solving the system of equations
a = 3c
a + 8 = 2(c + 8)
we find
a = 24 years
c = 8 years
click here to see the step by step solution of the system of equations
Catherine is 8 years old now.