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SVEN [57.7K]
3 years ago
5

the ratio of dogs to cats in the pet store is 3/5. how many cats are there in the store if there are 21 dogs

Mathematics
2 answers:
podryga [215]3 years ago
7 0
Let the number of cats be as x

Ratio = 3:5
3:5 = 21 : x
3/5 = 21/x
x= 21 * 5/3
x= 5* 7
= 35 cats..
borishaifa [10]3 years ago
5 0
X - the number of cats

The ratio of dogs to cats is 3:5, and there are 21 dogs.
\frac{21}{x}=\frac{3}{5} \\
3x=21 \times 5 \\
x=7 \times 5 \\
x=35

There are 35 cats in the pet store.
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the soccer club is selling tshirts and washing cars to raise money for a summer trip. last week, the club raised $292.50 by sell
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colleen truman earns aa 4.5% commission on all sales. in june, her sales totaled $40,000. how much did she earn in commission?
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Read 2 more answers
6.81 is what percent of 45.5
frosja888 [35]

To get the solution, we are looking for, we need to point out what we know.

1. We assume, that the number 45.5 is 100% - because it's the output value of the task.

2. We assume, that x is the value we are looking for.

3. If 45.5 is 100%, so we can write it down as 45.5=100%.

4. We know, that x is 6.81% of the output value, so we can write it down as x=6.81%.

5. Now we have two simple equations:

1) 45.5=100%

2) x=6.81%

where left sides of both of them have the same units, and both right sides have the same units, so we can do something like that:

45.5/x=100%/6.81%

6. Now we just have to solve the simple equation, and we will get the solution we are looking for.


7. Solution for what is 6.81% of 45.5


45.5/x=100/6.81

(45.5/x)*x=(100/6.81)*x       - we multiply both sides of the equation by x

45.5=14.684287812041*x       - we divide both sides of the equation by (14.684287812041) to get x

45.5/14.684287812041=x

3.09855=x

x=3.09855

now we have:

6.81% of 45.5=3.09855

Hope this helps!

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Answer:

The answer is A

Step-by-step explanation:

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