Checking account problem

Question

For the month of April a checking account has a balance of $528 for 22 days , $2331 for 5 days and $231 for 5 days . What is the account mean daily balance for April

Answer 1

Just use a weighted average as you do for computing GPA.

Average for April=[22(528)+5(2331)+5(231)]/(22+5+5)