The Sum Of Two Numbers Is 89 And Their Difference Is 31
The problem given says that 2 unknown numbers are given, whose sum is equal to 89 and the difference is 31. Let's find the two numbers :When we add the two numbers :
X + Y = 89
The difference of two numbers :
X - Y = 31
Solution :
If we add the two equations eachother , then we can find the first number.
X + Y = 89 X - Y = 31 2X = 120 |
Let's divide 120 to 2 for the first number "X" .
X/2 = 60
First number is 60
X + Y = 89
So ;
60 + Y = 89
Y = 89 - 60
Y = 29
Second number is 29
Question & Answer
The Sum Of Two Numbers Is 89 And Their Difference Is 31 : 60 And 29