Question

Ethel collects animal stickers.She has 30 cat stickers,15 horse stickers,19 dog stickers and 11 rabbit stickers. One third of the horse stickers are round and the rest are square. One fifth of the cat stickers are square and the rest are round. All the dog stickers are square. All the rabbit stickers are round . What proportion of all stickers are round?

Answer 1

just put together what you know:

horse: 5 round, 10 square
cat: 24 round, 6 square
dog: 0 round, 19 square
rabbit: 11 round, 0 square

so, now you can easily figure what fraction are round.