The Sum Of Two Numbers Is 80 And Their Difference Is 4
The problem given says that 2 unknown numbers are given, whose sum is equal to 80 and the difference is 4. Let's find the two numbers :When we add the two numbers :
X + Y = 80
The difference of two numbers :
X - Y = 4
Solution :
If we add the two equations eachother , then we can find the first number.
X + Y = 80 X - Y = 4 2X = 84 |
Let's divide 84 to 2 for the first number "X" .
X/2 = 42
First number is 42
X + Y = 80
So ;
42 + Y = 80
Y = 80 - 42
Y = 38
Second number is 38
Question & Answer
The Sum Of Two Numbers Is 80 And Their Difference Is 4 : 42 And 38