The Sum Of Two Numbers Is 30 And Their Difference Is 17
The problem given says that 2 unknown numbers are given, whose sum is equal to 30 and the difference is 17. Let's find the two numbers :When we add the two numbers :
X + Y = 30
The difference of two numbers :
X - Y = 17
Solution :
If we add the two equations eachother , then we can find the first number.
X + Y = 30 X - Y = 17 2X = 47 |
Let's divide 47 to 2 for the first number "X" .
X/2 = 23.5
First number is 23.5
X + Y = 30
So ;
23.5 + Y = 30
Y = 30 - 23.5
Y = 6.5
Second number is 6.5
Question & Answer
The Sum Of Two Numbers Is 30 And Their Difference Is 17 : 23.5 And 6.5