Problema Solution
Arlene s 7 years older than Todd Their ages total is 43 how old is ach person
solve by elimination
solve by substitution
solve by graphing
Answer provided by our tutors
let
x = the age of Arlene
y = the age of Todd
Arlene s 7 years older than Todd:
x = 7 + y
their ages total is 43:
x + y = 43
by solving the system of equations:
x = 7 + y
x + y = 43
we find:
x = 25 years
y = 18 years
click here to see the step by step solution of the system of equations:
lets graph the lines x = 7 + y and x + y = 43
the intersection of these two lines gives the solution
click here to see the graph:
Arlene is 25 years old.
Tod is 18 years old.