The larger of two numbers is 5 less than twice the smaller number. The sum of the two numbers is 28. How do you find the two numbers?

1 Answer
Nov 8, 2016

The numbers are 11 and 17

Explanation:

This question can be answered by using either 1 or 2 variables.
I will opt for 1 variable, because the second can be written in terms of the first. Define the numbers and variable first:

Let the smaller number be x.

The larger is "5 less than double x"

The larger number is 2x-5

The sum of the numbers is 28. Add them to get 28

x + 2x-5 = 28" "larr now solve the equation for x

3x = 28+5

3x = 33

x = 11

The smaller number is 11.
The larger is 2xx11-5 = 17

11+17 = 28