The Sum Of Two Numbers Is 28 And Their Difference Is 10
The problem given says that 2 unknown numbers are given, whose sum is equal to 28 and the difference is 10. Let's find the two numbers :When we add the two numbers :
X + Y = 28
The difference of two numbers :
X - Y = 10
Solution :
If we add the two equations eachother , then we can find the first number.
X + Y = 28 X - Y = 10 2X = 38 |
Let's divide 38 to 2 for the first number "X" .
X/2 = 19
First number is 19
X + Y = 28
So ;
19 + Y = 28
Y = 28 - 19
Y = 9
Second number is 9
Question & Answer
The Sum Of Two Numbers Is 28 And Their Difference Is 10 : 19 And 9