Ive already gotten this question wrong once what am i missing

Hi sis yuyyy is going on the phone for thanksgiving I will give be back in time to give me a call back I have to go follow up with orange brown on the phone number is so good I

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.