The sum of two answers is 40 and their difference is 10. What are the two numbers?

Solution:

Given sum of 2 answers is 40 and the difference is 10

Let the two numbers be x,y

x + y = 40 --- [1]

x - y = 10 --- [2]

By method of elimination, we get 2x = 50

x = 25

Put x = 25 in eq[2]

25-y = 10

y = 25 - 10

y = 15

The sum of two answers is 40 and their difference is 10. What are the two numbers?

Summary:

The sum of two answers is 40 and their difference is 10, then the two numbers are 25, 15.