The Sum Of Two Numbers Is 79 And Their Difference Is 36
The problem given says that 2 unknown numbers are given, whose sum is equal to 79 and the difference is 36. Let's find the two numbers :When we add the two numbers :
X + Y = 79
The difference of two numbers :
X - Y = 36
Solution :
If we add the two equations eachother , then we can find the first number.
|
X + Y = 79 X - Y = 36 2X = 115 |
Let's divide 115 to 2 for the first number "X" .
X/2 = 57.5
First number is 57.5
X + Y = 79
So ;
57.5 + Y = 79
Y = 79 - 57.5
Y = 21.5
Second number is 21.5
Question & Answer
The Sum Of Two Numbers Is 79 And Their Difference Is 36 : 57.5 And 21.5