Can you work out how many members this choir has from these percentages?
Two schools share a choir.
Last year there were 30 more students from school B than students from school A in the choir.
This year the number of choir members has increased by 10%.
The number of members from school A has increased by 20%.
The number of members from school B has increased by 5%.
How many members does the choir have this year?
This problem is taken from the UKMT Mathematical Challenges.
Age 14 to 16