Question 230952
Hello, 
Let's first show the smaller number as 4x and the larger number as x + 15. 

These should equal each other so: 

                         4x = x + 15
Solve for x 

                         3x = 15

Divide by 3 on each side:
 
                          x = 5

This makes sense. the smaller number is 5 and the larger number is 20

RJ Toftness
Author of "Unlock the Mystery to Math"
www.math-unlock.com