A gardening club has 21 members, of which 13 are males and the rest are females. What is the ratio of females to all club members

If 13 are males that means that 8 are females. The ratio of females to all club members would be 8:21

1. Find out how many females there are by subtracting the total members (21) minus the males (13). 21 - 13 = 8.

2. It is asking for a ratio of females (8) to total club members (21). A ratio can be written with a colon, as a fraction, or with the word "to". Any of these answers would work:

8:21

8/21

8 to 21