The Sum Of Two Numbers Is 66 And Their Difference Is 13
The problem given says that 2 unknown numbers are given, whose sum is equal to 66 and the difference is 13. Let's find the two numbers :When we add the two numbers :
X + Y = 66
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 = 66 X - Y = 13 2X = 79 |
Let's divide 79 to 2 for the first number "X" .
X/2 = 39.5
First number is 39.5
X + Y = 66
So ;
39.5 + Y = 66
Y = 66 - 39.5
Y = 26.5
Second number is 26.5
Question & Answer
The Sum Of Two Numbers Is 66 And Their Difference Is 13 : 39.5 And 26.5