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dem82 [27]
3 years ago
9

Please give answer of 6 number​

Mathematics
2 answers:
Irina18 [472]3 years ago
8 0

Answer:

7,500

Step-by-step explanation:

Let's solve this problem step-by-step. The library had 1,500 books in 2011. The ratio of books in 2011 and in 2012 is 1:2. Therefore, let the number of books in 2012 be x.

We have the following proportion:

\frac{1}{1,500}=\frac{2}{x},\\x=2\cdot 1,500=3,000

Therefore, there were 3,000 books in 2012. The ratio of books in 2012 and in 2013 is 2:5. Let the number of books in 2013 be y.

We have:

\frac{2}{3,000}=\frac{5}{y},\\2y=5\cdot 3,000,\\2y=15,000\\y=\boxed{7,500}

Therefore, there were 7,500 books in 2013.

Thepotemich [5.8K]3 years ago
6 0

Answer:

<em>7,500 books</em>

Step-by-step explanation:

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