The Sum Of Two Numbers Is 42 And Their Difference Is 11

The problem given says that 2 unknown numbers are given, whose sum is equal to 42 and the difference is 11. Let's find the two numbers :

When we add the two numbers :
X + Y = 42

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 = 42
X - Y = 11

2X = 53

Let's divide 53 to 2 for the first number "X" .

X/2 = 26.5

First number is 26.5

X + Y = 42
So ;
26.5 + Y = 42
Y = 42 - 26.5
Y = 15.5

Second number is 15.5

Question & Answer
The Sum Of Two Numbers Is 42 And Their Difference Is 11 : 26.5 And 15.5

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