The Sum Of Two Numbers Is 85 And Their Difference Is 9
The problem given says that 2 unknown numbers are given, whose sum is equal to 85 and the difference is 9. Let's find the two numbers :When we add the two numbers :
X + Y = 85
The difference of two numbers :
X - Y = 9
Solution :
If we add the two equations eachother , then we can find the first number.
|
X + Y = 85 X - Y = 9 2X = 94 |
Let's divide 94 to 2 for the first number "X" .
X/2 = 47
First number is 47
X + Y = 85
So ;
47 + Y = 85
Y = 85 - 47
Y = 38
Second number is 38
Question & Answer
The Sum Of Two Numbers Is 85 And Their Difference Is 9 : 47 And 38