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.

Answer 1

There are total $500$ creatures in the zoological park.

Out of these $500$ creatures,
$\bullet$ Number of birds= $50$, i.e., $\frac{50}{500}=\frac{1}{10}$ fraction of the total creatures in the park are birds.

$\bullet$ Number of reptiles= $150$, i.e., $\frac{150}{500}=\frac{3}{10}$ fraction of the total creatures in the park are reptiles.

$\bullet$ Number of water animals= $200$, i.e., $\frac{200}{500}=\frac{2}{5}$ fraction of the total creatures in the park are water animals.

$\bullet$ Number of other land animals= $100$, i.e., $\frac{100}{500}=\frac{1}{5}$ 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.


$\therefore$ Out of total $500$ creatures,
$\bullet$ $10\%$ are birds,
$\bullet$ $30\%$ are reptiles,
$\bullet$ $20\%$ are other land animals.

And the corresponding pie chart becomes