The Sum Of Two Numbers Is 30 And Their Difference Is 3
The problem given says that 2 unknown numbers are given, whose sum is equal to 30 and the difference is 3. Let's find the two numbers :When we add the two numbers :
X + Y = 30
The difference of two numbers :
X - Y = 3
Solution :
If we add the two equations eachother , then we can find the first number.
|
X + Y = 30 X - Y = 3 2X = 33 |
Let's divide 33 to 2 for the first number "X" .
X/2 = 16.5
First number is 16.5
X + Y = 30
So ;
16.5 + Y = 30
Y = 30 - 16.5
Y = 13.5
Second number is 13.5
Question & Answer
The Sum Of Two Numbers Is 30 And Their Difference Is 3 : 16.5 And 13.5