If a book costs $15 and you have a $50 bill, how much change will you get after purchasing it?

To determine how much change you will receive after purchasing the book, you need to subtract the cost of the book from the amount of money you have.

In this case, the book costs $15 and you start with a $50 bill. The calculation is as follows:

$50 (the amount you have) - $15 (the cost of the book) = $35

Thus, after buying the book, you will receive $35 in change. This answer accurately reflects the transaction taking place where the initial amount minus the purchase yields the correct amount of change.