Problema Solution
Grace is four times as old as Vicki. Five years ago, Vicki was 30 years younger than Grace. Find their present ages.
Answer provided by our tutors
let
g = the present age of Grace
v = the present age of Vicki
Grace is four times as old as Vicki:
g = 4v
5 years ago, Vicki was 30 years younger than Grace:
v - 5 = g - 5 - 30
v - 5 = g - 35
by solving the system of equations:
g = 4v
v - 5 = g - 35
we find:
g = 40 years
v = 10 years
click here to see the step by step solution of the system of equations:
Grace is 40 years old now.
Vicki is 10 years old now.