The bar chart depicts expenditure on fast foods, namely hamburgers, fish and chips and pizza by three income groups, while the line chart provides information on how many grammes of junk foods were consumed between 1970 and 1990.
Overall, high and average income groups spent the most pence on hamburgers, while fish and chips were the most preferred fast food for low income group. Looking at the line chart, while pizza and hamburgers experienced an increase in consumption, fish and chips declined by the end of the period, albeit increasing moderately in some point.
The weekly money spent on hamburgers took up a larger share for wealthy individuals, consisting more than 40 pence per person, while low income spent less that 10 perce. On the other hand, expenditure on pizza grew with income, rising from about 8 pence per person in the low-income bracket to 12 pence in the middle-income bracket, and peaking at 19 pence in the high-income bracket. Spending on fish and chips was approximately same for the high and low level income groups at around 18 pence, while figure rose to 25 pence per person in the average income level.
In terms of consumption, the hamburgers category showed a significant increase from below 100 grammes to over 500 grammes by the ending of the period. It rose steadily until 1980 and after this year experienced a substantial rise. Meanwhile, pizza also demonstrated an increase from around 50 grammes to just below 300 grammes. Compared with hamburgers, it showed a steady increase. By contrast, fish and chips started period as the highest at around 300 grammes in 1970, declined to around 200 grammes in around 1985, and then increased to around 250 grammes by the end of the period.