Question

The difference of 2 numbers is 3 and their sum is 25. What are the numbers? 10 and 15 14 and 11 11 and 13 13 and 12

Answer 1

Let the two numbers be x and y

As given, the difference of two numbers is 3, so

$x-y=3$  or $x=3+y$ ....(1)

And their sum is 25, so

$x+y=25$   .....(2)

Putting x=3+y in equation (2)

$3+y+y=25$

$2y=22$

$y=11$

As, x+y=25

$x+11=25$

$x=14$

So the two numbers are = 14 and 11