IELTS Writing Task 1. Please help me to correct this essay. Thank you very much

The bar chart illustrates/compares information about the expense of three Income groups on three types of Fast Food in the UK in 1990.

Generally speaking, the amount of fast foods eaten by the three mentioned groups was quite different. It is also clear that low-income group spent less money on Fast Food than two others.

As can be seen in the chart, people in the high-income group spent most money on fast foods, mostly on Hamburger. They spent 42 pence per week on hamburgers, higher than 10 pence per week of average income group. The similar trend was also seen in pizza. The expenditure on pizza of high income group was 18 pence per week while average income group used less with around 12 pence per week. Fish and chip was the only category of fast food showed average income Group spent more than high income group. The total expense on fish and chip by average income and high income groups were 25 Pence per week and 16 Pence per week, respectively.

In contrast, the total amount of money on Fast Food by low Income Group was lowest among the three groups. They spent most on Fish and Chip with 16 pence per week, followed by burgers with less than 15 pence per week. Only 6 pence per week was spent on Pizza by consumers of this group.