The Sum Of Two Numbers Is 87 And Their Difference Is 11
The problem given says that 2 unknown numbers are given, whose sum is equal to 87 and the difference is 11. Let's find the two numbers :When we add the two numbers :
X + Y = 87
The difference of two numbers :
X - Y = 11
Solution :
If we add the two equations eachother , then we can find the first number.
X + Y = 87 X - Y = 11 2X = 98 |
Let's divide 98 to 2 for the first number "X" .
X/2 = 49
First number is 49
X + Y = 87
So ;
49 + Y = 87
Y = 87 - 49
Y = 38
Second number is 38
Question & Answer
The Sum Of Two Numbers Is 87 And Their Difference Is 11 : 49 And 38