The Sum Of Two Numbers Is 77 And Their Difference Is 28
The problem given says that 2 unknown numbers are given, whose sum is equal to 77 and the difference is 28. Let's find the two numbers :When we add the two numbers :
X + Y = 77
The difference of two numbers :
X - Y = 28
Solution :
If we add the two equations eachother , then we can find the first number.
|
X + Y = 77 X - Y = 28 2X = 105 |
Let's divide 105 to 2 for the first number "X" .
X/2 = 52.5
First number is 52.5
X + Y = 77
So ;
52.5 + Y = 77
Y = 77 - 52.5
Y = 24.5
Second number is 24.5
Question & Answer
The Sum Of Two Numbers Is 77 And Their Difference Is 28 : 52.5 And 24.5