The Venn diagram shows information about the number of students in a school who are


members of the Athletics Club (A), the Brass Band (B) and the Chess Club (C)
15 students are not members of any of these clubs.
E
C
A
B
x
25
10
21
37
15
There are twice as many members of the Chess Club than there are members of the
Brass Band.
Find n B
C
At the start of 2022, the Drama Club had 80 members.
From the start of 2022 until the start of 2023, the number of members of the
Drama Club increased by 12.5%
From the start of 2023 until the start of 2024, the number of members of the
Drama Club increased by 30%