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Answer:

The ratio of dogs to cats is 3 dogs to 5 cats

Step-by-step explanation:

dogs to fish:    1:10

fish to cats :     6:1

dogs to cats:  3:5

FISH:

llllllllll (10)     llllllllll (10)     llllllllll(10)   (30 fish)

DOGS: 1 dog per 10 fish

D D D   3 dogs

CATS: 1 cat per 6 fish

C C C C C

Ratio represents partial data as some multiplies from numerator and denominator are lost due to simplification.  You can assume them to be variables.

The ratio of dogs to cats is 3:5

How to get real quantity of ratio of first quantity to second quantity =  a:b?

We actually cannot get real quantities but we can use variables to partially get the information of how much their quantities were.

I said 'partially' since we don't get real values but with variables only.

Since the ratio is a:b, thus let the cancelled multiple during simplification was x.

Then we have:

First quantity = ax

Second quantity = bx

How to calculate the ratio of dogs to cats?

It is given that:

Ratio of dogs to fish = 1:10

Then let number of dogs = 1x = x and number of fishes = 10x

Similarly,

Ratio of fish to cats = 6:1

Then let the multiple was y, then

Number of fishes = 6y,

Number of cats = 1y = y

But we have number of fishes = 10x and 6y both

Since number of fishes is constant, thus, they are equal. Or

[tex]10x = 6y\\\dfrac{x}{y} = \dfrac{6}{10} = \dfrac{3}{5}\\[/tex]

The ratio of dogs to cats = [tex]\dfrac{\text{Numbers of dogs}}{\text{Number of cats}} = \dfrac{x}{y} = \dfrac{3}{5}[/tex]

Thus, the ratio of dogs to cats is 3:5

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