20 If you have 4 wholes, and you want to know how many fifths there are, look in the name of "fifths", there are 5 fifths in a whole, so if you have 4 wholes, you will have 20 fifths. I hope this answered you question to the fullest.

4/5 x 3 = 12/15 so there are 12 fifths. 3 4/5 in 3 there are 3x5 fifths = 15 in 4/5 there are 4 fifths = 4 4 fifths plus 15 fifths = 19 There are 19 fifths in 3 4/