61/100 in expanded form

Ateacher noticed 5/8 of the students were wearing either blue shorts or white shorts. write two different ways this could be done.

School has 204 sixth grade students. if the sixth grade is 30% of the total school, how many students are in the middle school?

At the beginning of 1974/75,2 years a man invested #2000 in a bank at 12.5% compound interest, if it degree #650 at the end of each two years to pay his son's school fees, after payment of interest to pay his son's school fees, how much did he have left at the beginning of the 1978/79 school year?