Problema Solution
Alvin is 9 years older than Elga. The sum of their ages is 69. What is Elga's age?
Answer provided by our tutors
let
x = the age of Alvin
y = the age of Elga
Alvin is 9 years older than Elga
x = 9 + y
The sum of their ages is 69:
x + y = 69
by solving the system of equations:
x = 9 + y
x + y = 69
we find:
x = 39 years
y = 30 years
click here to see the step by step solution of the system of equations:
Alvin is 39 years old.
Elga is 30 years old.