At Southside middle school 40%of student play an instrument. there are 305 student. how many students play an instrument

You simply use this operation:

- total students are 305, we need to find how many of thm play instrumenst if 40% does.

40% can be rewrited as 0,4 in decimal.

than we simply utilise a basic percentage operation which allows us to find A PART of somethin=>

305*0,4 = students who instruments.