The Sum Of Two Numbers Is 61 And Their Difference Is 21
The problem given says that 2 unknown numbers are given, whose sum is equal to 61 and the difference is 21. Let's find the two numbers :When we add the two numbers :
X + Y = 61
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 = 61 X - Y = 21 2X = 82 |
Let's divide 82 to 2 for the first number "X" .
X/2 = 41
First number is 41
X + Y = 61
So ;
41 + Y = 61
Y = 61 - 41
Y = 20
Second number is 20
Question & Answer
The Sum Of Two Numbers Is 61 And Their Difference Is 21 : 41 And 20