You can
put this solution on YOUR website! .
You can easily solve it mentally.
Diminish "one number" by 25, for a minute.
Then the sum of 109 will decrease by 25 and will become 109 - 25 = 84.
Now it is 4 times the "other number".
Hence, the "other number" is 84/4 = 21.
Then the "one number" is 109 - 21 = 88.
Answer. The numbers are 88 and 21.