The Sum Of Two Numbers Is 30 And Their Difference Is 4
The problem given says that 2 unknown numbers are given, whose sum is equal to 30 and the difference is 4. Let's find the two numbers :When we add the two numbers :
X + Y = 30
The difference of two numbers :
X - Y = 4
Solution :
If we add the two equations eachother , then we can find the first number.
X + Y = 30 X - Y = 4 2X = 34 |
Let's divide 34 to 2 for the first number "X" .
X/2 = 17
First number is 17
X + Y = 30
So ;
17 + Y = 30
Y = 30 - 17
Y = 13
Second number is 13
Question & Answer
The Sum Of Two Numbers Is 30 And Their Difference Is 4 : 17 And 13