The Sum Of Two Numbers Is 49 And Their Difference Is 30
The problem given says that 2 unknown numbers are given, whose sum is equal to 49 and the difference is 30. Let's find the two numbers :When we add the two numbers :
X + Y = 49
The difference of two numbers :
X - Y = 30
Solution :
If we add the two equations eachother , then we can find the first number.
X + Y = 49 X - Y = 30 2X = 79 |
Let's divide 79 to 2 for the first number "X" .
X/2 = 39.5
First number is 39.5
X + Y = 49
So ;
39.5 + Y = 49
Y = 49 - 39.5
Y = 9.5
Second number is 9.5
Question & Answer
The Sum Of Two Numbers Is 49 And Their Difference Is 30 : 39.5 And 9.5