Model answer:

The bold graph shows the television audiences throughout the day. It shows that the percentage of audiences is zero percent in the early morning but it gradually rises up to ten percent at 8 am and maintains the same for the next two hours. There is a slight fall in percentage in the next two hours, however after that it rises sharply up to twenty percent within the next two hours. After this, the graph rises very fast and attains its peak at 10 pm which is about forty five percent. The graph gradually falls down and at 2 am it is at five percent. 

The thinner graph shows the percentage of radio audiences. Unlike the television one, the peak percentage of the radio audiences is at 8 am which is about thirty percent. Then it gradually falls and it corresponds with the television one at 2 pm. After that, it gradually falls but with a small increase in percentage at 4:30 to 6 pm. The percentage of the audience then gradually goes down and at 4 am, it is the lowest which is near 2 percent. These graphs prove the progessive popularity of television. (band 7)