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The citizens of a city were asked to choose their favorite pet. The circle graph shows how the citizens answered the questions, how many chose hamsters, birds, or fish.

The citizens of a city were asked to choose their favorite pet. The circle graph shows-example-1
User Brooks
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1 Answer

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To find how many chose hamsters, birds, or fish we first verified that the sum of all the percentages is 100% to check that the citizens answered just one time each one.

We have that 17+22+21+27+7+6 = 100.

Now hamsters, birds, or fish is an union of the people that answered this is a sum 6+21+17 = 44 in this case because the events are independients this means the intersection is empty. So the answer is 44.

User Dpetrini
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