Question

In an aquarium, there are 50 fish as per the following table.

Color of Fish	Number of Fish	Percentage
Red	15	- - -
Blue	5	$10\%$
Yellow	30	- - -
Total	50	$100\%$

Out of the total number of creatures, % are red fish, and % are yellow fish in the aquarium.

Answer 1

There are total $50$ fish in the aquarium.

Out of these $50$ fish,
$\bullet$ Number of red fish = $15$, i.e., $\frac{15}{50}=\frac{3}{10}$ fraction of the total fish in the aquarium are red in color.

$\bullet$ Number of blue fish= $5$, i.e., $\frac{5}{50}=\frac{1}{10}$ fraction of the total fish in the aquarium are blue in color.

$\bullet$ Number of yellow fish = $30$, i.e., $\frac{30}{50}=\frac{3}{5}$ fraction of the total fish in the aquarium are yellow in color.

The fractions of different fish are summarized in the table below:

Color of Fish	Number of Fish	Fraction
Red	15	$\frac{3}{10}$
Blue	5	$\frac{1}{10}$
Yellow	30	$\frac{3}{5}$
Total	501	$\frac{1}{1}$

We know that for calculating percentage, we multiply the fraction part by 100 as tabulated below.

Color of Fish	Number of Fish	Percentage
Red	15	$\frac{3}{10}\times 100=30\%$
Blue	5	$\frac{1}{10}\times 100=10\%$
Yellow	30	$\frac{3}{5}\times 100=60\%$
Total	50	$\frac{1}{1}\times 100=100\%$

$\therefore$ Out of total $50$ fish,
$\bullet$ $30\%$ are red fish,
$\bullet$ $10\%$ are blue fish,
$\bullet$ $60\%$ are yellow fish.

And the corresponding pie chart is as follows: