The given charts indicate the proportion of money spent on eating fast foods each week and the consumption of fast foods in a specific period between 1970 and 1990.
Overall, the greatest consumption of fast foods among high-income and average-income people is for hamburgers per week. Among low-income people, the most eaten fast foods they prefer to eat each week are fish and chips. Also, the consumption of hamburgers and pizza underwent a significant increase; by contrast, fish and chips consumption declined from 1970 to 1990.
It is clear from the bar chart that the money spent on eating hamburgers per week by high-income and average-income people is around 43 pence per person, and the money spent on eating fish and chips by high-income and average-income people is about 17 and 25 pence per person per week, respectively. The consumption of pizza among low-income people is the least, which accounted for 8 pence per week per person.
By the given data from the line graph, the consumption of hamburgers and pizza increased significantly over two decades. The proportion of hamburgers and pizza consumed in 1970 was about 90 and 65 grams, respectively, but in 1990 both were around 550 and 280 grams, respectively. The amount of fish and chips consumed in 1990 was 300 grams; however, by the end of the period, the consumption of fish and chips declined gradually to about 220 grams.