Question

In a zoological park, there are 500 creatures as per the following table. Out of the total number of creatures, % are birds, % are reptiles, 40% are water animals and % are other land reptiles in the zoological park.

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Solution

There are total 500 creatures in the zoological park. Out of these 500 creatures, ∙ Number of birds= 50, i.e., 50500=110 fraction of the total creatures in the park are birds. ∙ Number of reptiles= 150, i.e., 150500=310 fraction of the total creatures in the park are reptiles. ∙ Number of water animals= 200, i.e., 200500=25 fraction of the total creatures in the park are water animals. ∙ Number of other land animals= 100, i.e., 100500=15 fraction of the total creatures in the park are land animals. The fractions of different creatures are summarized in the table below: We know that for calculating percentage, we multiply the fraction part by 100 as tabulated below. ∴ Out of total 500 creatures, ∙ 10% are birds, ∙ 30% are reptiles, ∙ 20% are other land animals. And the corresponding pie chart becomes

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