Question

Carlos Martin received a statement from his bank showing a balance of $56.75 as of March 15. His checkbook shows a balance of $87.37 as of March 20. The bank returned all cancelled checks but two. One check was for $5.00 and other was for $13.25. How much did Carlos deposit in his account between march 15 and March 20

Answer 1

Checks not cancelled;
5.00+13.25
18.25
Total 

Answer 2

On March 20 he had $87.37 so $87.37-$56.75=$30.62. So between March 15 and March 20 $30.62 was deposited. Since $18.25 was returned to him you would subtract that from $30.62. $30.62-$18.25= $12.37. Therefore, Carlos deposited $12.37 into the account between March 15 and March 20.