In this task, find the most appropriate number to replace the blank (indicated with _ ) and express it in words.

[Q]: Coral reefs make up only _ per cent of the area of the Great Barrier Reef.
[A]: five

[Q]: Ticks are small round arachnids with _ legs and can have either a soft or hard body.
[A]: eight

[Q]: Rock cavies become sexually mature when they are about one to _ months old.
[A]:
three