The Sum Of Two Numbers Is 85 And Their Difference Is 18
The problem given says that 2 unknown numbers are given, whose sum is equal to 85 and the difference is 18. Let's find the two numbers :When we add the two numbers :
X + Y = 85
The difference of two numbers :
X - Y = 18
Solution :
If we add the two equations eachother , then we can find the first number.
|
X + Y = 85 X - Y = 18 2X = 103 |
Let's divide 103 to 2 for the first number "X" .
X/2 = 51.5
First number is 51.5
X + Y = 85
So ;
51.5 + Y = 85
Y = 85 - 51.5
Y = 33.5
Second number is 33.5
Question & Answer
The Sum Of Two Numbers Is 85 And Their Difference Is 18 : 51.5 And 33.5