The Sum Of Two Numbers Is 78 And Their Difference Is 22
The problem given says that 2 unknown numbers are given, whose sum is equal to 78 and the difference is 22. Let's find the two numbers :When we add the two numbers :
X + Y = 78
The difference of two numbers :
X - Y = 22
Solution :
If we add the two equations eachother , then we can find the first number.
X + Y = 78 X - Y = 22 2X = 100 |
Let's divide 100 to 2 for the first number "X" .
X/2 = 50
First number is 50
X + Y = 78
So ;
50 + Y = 78
Y = 78 - 50
Y = 28
Second number is 28
Question & Answer
The Sum Of Two Numbers Is 78 And Their Difference Is 22 : 50 And 28