If 1.0=7.5 hrs & .5 = 5 hrs how many hours does .8 =

Question

Trying to figure out how many hrs my staff employee is entitled to work when he is classified as .8 employee.  my 1.0 employee works 8 hrs and is paid for 7.5, my  .5 employee is paid for 5 hours...how many hrs will the .8 employee get paid for?