The Sum Of Two Numbers Is 40 And Their Difference Is 13
The problem given says that 2 unknown numbers are given, whose sum is equal to 40 and the difference is 13. Let's find the two numbers :When we add the two numbers :
X + Y = 40
The difference of two numbers :
X - Y = 13
Solution :
If we add the two equations eachother , then we can find the first number.
X + Y = 40 X - Y = 13 2X = 53 |
Let's divide 53 to 2 for the first number "X" .
X/2 = 26.5
First number is 26.5
X + Y = 40
So ;
26.5 + Y = 40
Y = 40 - 26.5
Y = 13.5
Second number is 13.5
Question & Answer
The Sum Of Two Numbers Is 40 And Their Difference Is 13 : 26.5 And 13.5