Question

There are 2 numbers and the sum of those numbers are 40 and the difference of those numbers is 10 what are the numbers that equal the sum and difference

Answer 1

15 and 25

Explanation:

15+25=40

10+20=30+5+5=10+30=40

Answer 2

Answer:one number is 15 and the other number is 25

Explanation:

Let x represent one of the numbers.

Let y represent the other number.

There are 2 numbers and the sum of those numbers are 40. This means that

x + y = 40 - - - - - - - -1

The difference of those numbers is 10. This means that

x - y = 10 - - - - - - - - -2

We would eliminate x by subtracting equation 2 from equation 1, it becomes

2y = 50

y = 50/2 = 25

Substituting y = 25 into equation 1, it becomes

x + 25 = 40 - 25 = 15