an onine store receives customer satisfaction ratings between 0 and 1900, inclusive. in the first 10 ratings the store recieved, the average ( arithmetic mean) of the rations was 75. What is hte least value the store can receive for the 11th rationg and still be able to have an verage of at least 85 for the first 20 ratings

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.