The Sum Of Two Numbers Is 55 And Their Difference Is 18
The problem given says that 2 unknown numbers are given, whose sum is equal to 55 and the difference is 18. Let's find the two numbers :When we add the two numbers :
X + Y = 55
The difference of two numbers :
X - Y = 18
Solution :
If we add the two equations eachother , then we can find the first number.
|
X + Y = 55 X - Y = 18 2X = 73 |
Let's divide 73 to 2 for the first number "X" .
X/2 = 36.5
First number is 36.5
X + Y = 55
So ;
36.5 + Y = 55
Y = 55 - 36.5
Y = 18.5
Second number is 18.5
Question & Answer
The Sum Of Two Numbers Is 55 And Their Difference Is 18 : 36.5 And 18.5