Brodrick answered 21 of the 25 questions of his history correctly. what decimal represents the fraction of problems he answered incorrectly

25 - 21 = 4 questions of his history incorrectly ;
4 / 25 = 0.16 represents the fraction of problems he answered incorrectly ;

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.