This task is about calculating ratios.
A concert was held at the town hall for the local school children.
For every 20 children, 1 adult was admitted free. 360 children attended the concert.
a) How many adults were admitted free?
b) If 590 children had attended the concert,
how many adults would have been admitted free?
c) How many children would have attended the concert if 25 adults had been admitted free?
