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3 years ago

Please help with this I'm not sure what the answer is

Mathematics

2 answers:

VARVARA [1.3K]3 years ago

6 0

each box has 15 science fiction and 13 mystery with a total of 28 books per box. If there are 7 boxes so there should be 28*7=196 books. So for each kind of book do 15 * 7 and 13 * 7 to get 105 science and 91 mystery books all together for a total of 196 books.

-Dominant- [34]3 years ago

3 0

Ok so first just pay attention to the Mystery books and Science books.

there are 13 mystery books and 15 Science books so your answer will be two.

Hope this helps.

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3 years ago

2) Lisa is ordering sand from the Internet, On one site she found sand on sale for

Anastasy [175]

For this case we must find the unit cost (dollars per pound) of each site and then compare.

We take into account that:

1kg equals 2.205 pounds

So, we have:

Site 1:

$C = 2.25 \frac {dollars} {pound}$

Site 2:

$5kg = 5 (2.205\ pounds) = 11.025 pounds$

So, the unit cost is:

$C = \frac {14} {11.025} \frac {dollars} {pound} = 1.27 \frac {dollars} {pound}$

Thus, the best deal is on site 2.

ANswer:

The best deal is on site 2.

7 0

3 years ago