The Sum Of Two Numbers Is 78 And Their Difference Is 8
The problem given says that 2 unknown numbers are given, whose sum is equal to 78 and the difference is 8. Let's find the two numbers :When we add the two numbers :
X + Y = 78
The difference of two numbers :
X - Y = 8
Solution :
If we add the two equations eachother , then we can find the first number.
X + Y = 78 X - Y = 8 2X = 86 |
Let's divide 86 to 2 for the first number "X" .
X/2 = 43
First number is 43
X + Y = 78
So ;
43 + Y = 78
Y = 78 - 43
Y = 35
Second number is 35
Question & Answer
The Sum Of Two Numbers Is 78 And Their Difference Is 8 : 43 And 35