Question

azul went snorkeling and he noticed that the ratio of parrot fish to clownfish was 4:3 .He was 20 parrot fish. How many clownfish did he see?

Answer 1

15 clown fish.

Explanation:

We have been that Azul went snorkeling and he noticed that the ratio of parrot fish to clown fish was 4:3.

Since proportion states that two fractions are equal, so we will use proportion to solve for our given problem as:

`\frac{\text{Parrot fish}}{\text{Clown fish}}=(4)/(3)`

To find the number of clown fish we will substitute the given number of parrot fish in our equation.

`\frac{20}{\text{Clown fish}}=(4)/(3)`

Upon cross multiplying our equation we will get,

`\text{Clown fish}*4=20*3`

Upon dividing both sides of our equation by 4 we will get,

`\frac{\text{Clown fish*4}}{4}=(20*3)/(4)`

`\text{Clown fish}=5*3`

`\text{Clown fish}=15`

Therefore, Azul have seen 15 clown fish.

Answer 2

Let

x------> the number of parrot fish

y-------> the number of clown fish

we know that

`(x)/(y)= (4)/(3)` ------> equation A

`x=20`

so

substitute the value of x in the equation A and solve for y

`(20)/(y)= (4)/(3)\\ \\4*y=20*3 \\ \\y=60/4 \\ \\y=15\ clown\ fish`

therefore

the answer is

`15\ clown\ fish`