Answer:
In an experimental study looking at classical music exposure and reading ability in children, the researcher divided the children into two groups (Groups A and B
8/10 of the students in the art class are painting.
1/2=5/10
5/10+3/10=8/10
total distance travelled=72+69=141
time taken in hours for journey= (48/60)h + (69/60)= 1.95 h
average speed=141km/1.95h= 72.3km/h (3 sf)
