Question 827725
Set x = the number
 (4/5)x = 64
multiply each side by 5/4
  x = (5/4)64
  x = (5*64/4)
  x = (5*16)
  x = 80
Now we want (3/8)*80
(3/8)*80 = 3*80/8
    = 3*10
    = 30