The Sum Of Two Numbers Is 78 And Their Difference Is 2
The problem given says that 2 unknown numbers are given, whose sum is equal to 78 and the difference is 2. Let's find the two numbers :When we add the two numbers :
X + Y = 78
The difference of two numbers :
X - Y = 2
Solution :
If we add the two equations eachother , then we can find the first number.
|
X + Y = 78 X - Y = 2 2X = 80 |
Let's divide 80 to 2 for the first number "X" .
X/2 = 40
First number is 40
X + Y = 78
So ;
40 + Y = 78
Y = 78 - 40
Y = 38
Second number is 38
Question & Answer
The Sum Of Two Numbers Is 78 And Their Difference Is 2 : 40 And 38