Question

The sum of two numbers is 25. One of the numbers is fifteen less than the other. Find the numbers.

Answer 1

20+5 because 5 is 15 less than 25.

Answer 2

X + y = 25

X - 15 = y

X + (x - 15) = 25

2x - 15 = 25

2x= 10

X=5

5 + y = 25

Y=20