Di Paoloma University had a faculty reduction and lost 15 of

Di Paoloma University had a faculty reduction and lost 1/5 of its faculty. If 320 faculty members were left after the reduction, how many members were there originally?

Solution

1/5 means 20% is the left out faculty which is 320.

So, 100% that is initially available is 100/20*320=1600.

Originally 1600 faculty were there.