Question 676561: A+B=78
A-B=36
A/B=
Answer by jpvn2015(54)   (Show Source):
You can put this solution on YOUR website! First, let's find A and B. It is obvious, once you understand the problem, that A is 57 and B is 21.
57 and 21 meet the criteria: 57+21=78 57-21=36
Now that we've figured out the numbers, it is time to divide them: 57/21
That reduces to 19/7.
So, your answer is 19/7, or 2.714...
Here's how I found out the answer:
First, let's find the difference. 78-36 is 42. Half of 42 is 21. Thus, the smaller number is 21. Then, it's substitution from there.
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