The Sum Of Two Numbers Is 85 And Their Difference Is 31
The problem given says that 2 unknown numbers are given, whose sum is equal to 85 and the difference is 31. Let's find the two numbers :When we add the two numbers :
X + Y = 85
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 = 85 X - Y = 31 2X = 116 |
Let's divide 116 to 2 for the first number "X" .
X/2 = 58
First number is 58
X + Y = 85
So ;
58 + Y = 85
Y = 85 - 58
Y = 27
Second number is 27
Question & Answer
The Sum Of Two Numbers Is 85 And Their Difference Is 31 : 58 And 27