The Sum Of Two Numbers Is 31 And Their Difference Is 24

The problem given says that 2 unknown numbers are given, whose sum is equal to 31 and the difference is 24. Let's find the two numbers :

When we add the two numbers :
X + Y = 31

The difference of two numbers :
X - Y = 24

Solution :

If we add the two equations eachother , then we can find the first number.

X + Y = 31
X - Y = 24

2X = 55

Let's divide 55 to 2 for the first number "X" .

X/2 = 27.5

First number is 27.5

X + Y = 31
So ;
27.5 + Y = 31
Y = 31 - 27.5
Y = 3.5

Second number is 3.5

Question & Answer
The Sum Of Two Numbers Is 31 And Their Difference Is 24 : 27.5 And 3.5