To get this, you have to understand how the first and second numbers are related.
If we set the second number to x, the first number, being 3/20 of x, is (3/20)x. Knowing this, we can set up the equation:
- x+3/20x=23, we can add the x values and get
- 23/20x=23, divide both sides by 23/20, and get
- so the second number is 20, the first is 3.
I hope this helped.