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den301095 [7]
3 years ago
15

The ratio of the number of adults to the number of children in a library is 12:5. If there are 45 children in the library, how m

any adults are there at the library?
Mathematics
2 answers:
patriot [66]3 years ago
5 0

Answer:

The answer is 108.

Step-by-step explanation:

This can be solved with a simple proportion. 5/12 = 45/1. For 5 to become 45, you need to multiply by 9. You do the same to the denominator. 12 times 9 is 108.

zysi [14]3 years ago
4 0
The answer would be 108. 108:45 can be simplified to 12:5.
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2 years ago
A person who is 68in tall casts a shadow that is 54in long. At the same moment, a tree casts a shadow that is 18ft long. What is
34kurt

Answer:

<u>22.67 ft</u> is the height of tree.

Step-by-step explanation:

Given:

Height of a person is 68 in and casts a shadow that is 54 in long.

At the same point, a tree casts a shadow that is 18 ft long.

Now, to find the height of tree.

Let the height of tree be x.

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So, 68 in is equivalent to 54 in.

Thus, x is equivalent to 18 ft.

Now, to get the height of tree by using cross multiplication method:

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<em>By cross multiplying we get:</em>

<em />1224=54x<em />

<em>Dividing both sides by 54 we get:</em>

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3 years ago
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Step-by-step explanation:

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