The Sum Of Two Numbers Is 54 And Their Difference Is 15
The problem given says that 2 unknown numbers are given, whose sum is equal to 54 and the difference is 15. Let's find the two numbers :When we add the two numbers :
X + Y = 54
The difference of two numbers :
X - Y = 15
Solution :
If we add the two equations eachother , then we can find the first number.
|
X + Y = 54 X - Y = 15 2X = 69 |
Let's divide 69 to 2 for the first number "X" .
X/2 = 34.5
First number is 34.5
X + Y = 54
So ;
34.5 + Y = 54
Y = 54 - 34.5
Y = 19.5
Second number is 19.5
Question & Answer
The Sum Of Two Numbers Is 54 And Their Difference Is 15 : 34.5 And 19.5