The Sum Of Two Numbers Is 78 And Their Difference Is 24
The problem given says that 2 unknown numbers are given, whose sum is equal to 78 and the difference is 24. Let's find the two numbers :When we add the two numbers :
X + Y = 78
The difference of two numbers :
X - Y = 24
Solution :
If we add the two equations eachother , then we can find the first number.
X + Y = 78 X - Y = 24 2X = 102 |
Let's divide 102 to 2 for the first number "X" .
X/2 = 51
First number is 51
X + Y = 78
So ;
51 + Y = 78
Y = 78 - 51
Y = 27
Second number is 27
Question & Answer
The Sum Of Two Numbers Is 78 And Their Difference Is 24 : 51 And 27