By working with percentages, we want to see how much did Gautam lost or win in the whole transaction. We will see that he loses 41.20 AED in the whole transaction.
We know that both games cost 4120 AED each.
With one, he loses 5%, meaning that he sells it at 95% of the original price, so he sells it at:
(4120 AED)*(95%/100%) = (4120 AED)*0.95 = 3914 AED
For the other he wins 4%, so he sells it at 104% of the original price, it is:
(4120 AED)*(104%/100%) = (4120 AED)*1.04 = 4284.80 AED.
The whole transaction will be:
3914 AED + 4284.80 AED - 4120 AED - 4120 AED = -41.20 AED
This means that in the whole transaction he loses 41.20 AED.
If you want to learn more about percentages, you can read:
https://brainly.com/question/14345924