The Sum Of Two Numbers Is 71 And Their Difference Is 28
The problem given says that 2 unknown numbers are given, whose sum is equal to 71 and the difference is 28. Let's find the two numbers :When we add the two numbers :
X + Y = 71
The difference of two numbers :
X - Y = 28
Solution :
If we add the two equations eachother , then we can find the first number.
X + Y = 71 X - Y = 28 2X = 99 |
Let's divide 99 to 2 for the first number "X" .
X/2 = 49.5
First number is 49.5
X + Y = 71
So ;
49.5 + Y = 71
Y = 71 - 49.5
Y = 21.5
Second number is 21.5
Question & Answer
The Sum Of Two Numbers Is 71 And Their Difference Is 28 : 49.5 And 21.5