Question 1150665
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What fraction of the animals in the store are birds and bunnies?<br>
There are no animals in the store that are both birds and bunnies; so the answer is 0.<br>
What fraction of the animals in the store are not birds and bunnies?<br>
ALL of them are not both birds and bunnies; so the answer is 1.<br>
Now let's ask and answer the right questions.<br>
What fraction of the animals in the store are birds OR bunnies?<br>
birds 2/5; bunnies 3/8.  Get a common denominator: 5*8 = 40.<br>
birds 16/40; bunnies 15/40<br>
birds OR bunnies: 16/40+15/40 = 31/40<br>
What fraction of the animals in the store are not birds OR bunnies?<br>
1-31/40 = 9/40<br>