Answer:
Pay the amount that is $85 in order to buy the watch
Step-by-step explanation:
A watch which has a special value of $100 but the person purchased it for a $75. The person is in profit. But unfortunately, the person lost the watch. And the store is selling the same watch now at a price of $85.
So, if the person wants the watch, then the person should pay that risen price which is $85.