I am thinking of two numbers. The first number is 1 more than twice the second number. The sum of the two numbers is 25. What are the two numbers?

Question

Use substitution and/or elimination to answer.

Answer 1

First number is x

Second number is y

 

x = 2y + 1

x + y = 25

 

(2y + 1) + y = 25

3y = 24

y=24/3

y = 8

 

x = 2(8) + 1

x = 16+1

x=17