The Sum Of Two Numbers Is 77 And Their Difference Is 25
The problem given says that 2 unknown numbers are given, whose sum is equal to 77 and the difference is 25. Let's find the two numbers :When we add the two numbers :
X + Y = 77
The difference of two numbers :
X - Y = 25
Solution :
If we add the two equations eachother , then we can find the first number.
X + Y = 77 X - Y = 25 2X = 102 |
Let's divide 102 to 2 for the first number "X" .
X/2 = 51
First number is 51
X + Y = 77
So ;
51 + Y = 77
Y = 77 - 51
Y = 26
Second number is 26
Question & Answer
The Sum Of Two Numbers Is 77 And Their Difference Is 25 : 51 And 26