The bar chart compares the spending on hamburger, fish and chips, and pizza by income groups in the UK in 1990, while the line graph illustrates the consumption of these fast foods from 1970 to 1990.
Overall, the spending on fast foods increased by income. Humburger accounted for the largest proportion among those with high- and mid-income, while fish and chips was more popular for the low-income group. The consumptions per person of two fast foods (hamburger and fish and chips) grew constantly, whereas that of pizza fell gradually over time before leveling off in the last five years.
The high-income group accounted for over 40% of the hamburger consumption, which was 10 percentage points higher than the mid-income group and more than 25 percentage points higher than the low-income group. Fish and chips was the most common choice for those with average income. The proportions of the high- and low-income group for fish and chips were relatively similar, at around 16%. The corresponding figures of pizza for three groups were 19%, 12% and 7%, respectively.
Pizza had the highest consumption level in 1970, at 300 grams per person. It gradually decreased gradually to 200 grams per person in 1985 and remained relatively unchanged by 1990. By comparison, each person consumed less than 100 grams of fish and chips. This figure increased slightly to 150 grams in 1980, then jumped to 500 grams per person at the end of the period. Hamburger followed a similar pattern. It had the lowest point at less than 50 grams per person in 1970, then rose to just over 100 grams per person in 1985 before reaching its highest point at below 300 grams per person in 1990.