The Sum Of Two Numbers Is 81 And Their Difference Is 11
The problem given says that 2 unknown numbers are given, whose sum is equal to 81 and the difference is 11. Let's find the two numbers :When we add the two numbers :
X + Y = 81
The difference of two numbers :
X - Y = 11
Solution :
If we add the two equations eachother , then we can find the first number.
|
X + Y = 81 X - Y = 11 2X = 92 |
Let's divide 92 to 2 for the first number "X" .
X/2 = 46
First number is 46
X + Y = 81
So ;
46 + Y = 81
Y = 81 - 46
Y = 35
Second number is 35
Question & Answer
The Sum Of Two Numbers Is 81 And Their Difference Is 11 : 46 And 35