The Sum Of Two Numbers Is 40 And Their Difference Is 9
The problem given says that 2 unknown numbers are given, whose sum is equal to 40 and the difference is 9. Let's find the two numbers :When we add the two numbers :
X + Y = 40
The difference of two numbers :
X - Y = 9
Solution :
If we add the two equations eachother , then we can find the first number.
X + Y = 40 X - Y = 9 2X = 49 |
Let's divide 49 to 2 for the first number "X" .
X/2 = 24.5
First number is 24.5
X + Y = 40
So ;
24.5 + Y = 40
Y = 40 - 24.5
Y = 15.5
Second number is 15.5
Question & Answer
The Sum Of Two Numbers Is 40 And Their Difference Is 9 : 24.5 And 15.5