The Sum Of Two Numbers Is 76 And Their Difference Is 21
The problem given says that 2 unknown numbers are given, whose sum is equal to 76 and the difference is 21. Let's find the two numbers :When we add the two numbers :
X + Y = 76
The difference of two numbers :
X - Y = 21
Solution :
If we add the two equations eachother , then we can find the first number.
X + Y = 76 X - Y = 21 2X = 97 |
Let's divide 97 to 2 for the first number "X" .
X/2 = 48.5
First number is 48.5
X + Y = 76
So ;
48.5 + Y = 76
Y = 76 - 48.5
Y = 27.5
Second number is 27.5
Question & Answer
The Sum Of Two Numbers Is 76 And Their Difference Is 21 : 48.5 And 27.5