you need an average of 88. you have scored an 85,90,80,94 on four out of five test. what must your score be on the 5th test to have an average of an 88??
see related questions below.
Add up your total so far.
How many more to have 5*88 at the end?
Add up your total so far.
How many more to have 5*88 at the end?