The Sum Of Two Numbers Is 56 And Their Difference Is 15
The problem given says that 2 unknown numbers are given, whose sum is equal to 56 and the difference is 15. Let's find the two numbers :When we add the two numbers :
X + Y = 56
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 = 56 X - Y = 15 2X = 71 |
Let's divide 71 to 2 for the first number "X" .
X/2 = 35.5
First number is 35.5
X + Y = 56
So ;
35.5 + Y = 56
Y = 56 - 35.5
Y = 20.5
Second number is 20.5
Question & Answer
The Sum Of Two Numbers Is 56 And Their Difference Is 15 : 35.5 And 20.5