The Sum Of Two Numbers Is 90 And Their Difference Is 19
The problem given says that 2 unknown numbers are given, whose sum is equal to 90 and the difference is 19. Let's find the two numbers :When we add the two numbers :
X + Y = 90
The difference of two numbers :
X - Y = 19
Solution :
If we add the two equations eachother , then we can find the first number.
X + Y = 90 X - Y = 19 2X = 109 |
Let's divide 109 to 2 for the first number "X" .
X/2 = 54.5
First number is 54.5
X + Y = 90
So ;
54.5 + Y = 90
Y = 90 - 54.5
Y = 35.5
Second number is 35.5
Question & Answer
The Sum Of Two Numbers Is 90 And Their Difference Is 19 : 54.5 And 35.5