The Sum Of Two Numbers Is 72 And Their Difference Is 36
The problem given says that 2 unknown numbers are given, whose sum is equal to 72 and the difference is 36. Let's find the two numbers :When we add the two numbers :
X + Y = 72
The difference of two numbers :
X - Y = 36
Solution :
If we add the two equations eachother , then we can find the first number.
X + Y = 72 X - Y = 36 2X = 108 |
Let's divide 108 to 2 for the first number "X" .
X/2 = 54
First number is 54
X + Y = 72
So ;
54 + Y = 72
Y = 72 - 54
Y = 18
Second number is 18
Question & Answer
The Sum Of Two Numbers Is 72 And Their Difference Is 36 : 54 And 18