Please help me with this. 50 students each did a mathematics
test.
The mean score for these 50 students
was 8.4
There were 30 boys.
The mean score for these 30 boys was
8.25
Work out the mean score for the girls.​

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.

Physical stimulation can not be used as you carnt ask 1/2 a person a it would be painful