The Sum Of Two Numbers Is 40 And Their Difference Is 4
The problem given says that 2 unknown numbers are given, whose sum is equal to 40 and the difference is 4. Let's find the two numbers :When we add the two numbers :
X + Y = 40
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 = 40 X - Y = 4 2X = 44 |
Let's divide 44 to 2 for the first number "X" .
X/2 = 22
First number is 22
X + Y = 40
So ;
22 + Y = 40
Y = 40 - 22
Y = 18
Second number is 18
Question & Answer
The Sum Of Two Numbers Is 40 And Their Difference Is 4 : 22 And 18