Question

A librarian knows that 45% of the books currently

Answer 1

Answer:

$2772$

Step-by-step explanation:

The amount of books that will not be returned are $45$%$=45/100=9/20$, multiplied by $5040$. We multiply it by $5040$ because $45$%$(5040)=45$%$*5040$.

$45/100*(5040)=9/20*(5040)=9/2*504=9*252=2268$, so the answer is $2268$, right?

Wrong! $2268$ is the amount of books that will NOT be returned on the due date. We need the amount of books that WILL be returned on the due date. So, the real answer is $5040-2268=2772$.

So, the answer is $\boxed{2772}$ and we're done!