You can't compare together.
But you don't need to compare the 2 charts together-you can describe them separately.
describe specific numbers for each chart separately
Paragraph 1
Paragraph 2
look for one main feature in each chart
the evening courses were much more popular among older adults.
Paragraph 3
, with 40 female and 20 male students
Paragraph 4
Looking at the pie chart
26% were aged 50 or more
25% were aged between 40 and 49
Younger adults were in the minority, with number.
the majority of people attending evening lessons were over 40 years,