At a blood drive, 4 donors with type 0+ blood, 4 donors with type A+ blood, and 2 donors with type B + blood are in line. In how many distinguishable ways can the
donors be in line?
The donors can be in line in
different ways.

At a constant it will take one hour to travel 32 mi.at that speed it will take 1/2 hr to travel the remaining 16 mi.it will take 1+1/2 hr to travel the 48mi @ 32mph.so 1 hr = 60 min& 1/2 hr = 30 min1+1/2 hr = 90 min.there are 60s in each 90 × 60 = 3600 seconds.the real question seriously is he why are they driving so slow? ! lol.