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matrenka [14]
3 years ago
5

1. Twelve large bottles of water cost $9.

Mathematics
2 answers:
Vaselesa [24]3 years ago
4 0

Answer:1. $3- 4 bottles, 1 bottle = 4/3 , 7 bottles= 28/3

2. 40 pounds=$32, 1 pound= $8/10

3. Per bag= 3/2, 7bags= 21/2

4. Per book = $3, 21 books= $63

5. Per bracelet = 0.25 cents, 11 bracelets = 2 dollars 75 cents

Step-by-step explanation:

Sphinxa [80]3 years ago
3 0
Answer 1: for 3 dollars you can buy 4 water bottles because $9 divided by $3 is 3 so we can assume 12 divided by 3 which is 4.

It is 0.75 a bottle. We know that because 0.75 times 12 equals nine, so that checks our work.

7 bottles of water would cost 5.25 dollars because 0.75x7 is 5.25


Answer 2: 40 pounds would cost $32 because 10x4=40 so we can do $8x4= $32

It is 0.8 per pound. We know this because you divide 10 by 8 and it’s 0.8


Answer 3: It’s $1.50 per bag. We know that because $4 divided by 6 is $1.50.

At that rate, 7 bags would be $10.50. Because 1.50 times 7 equals 10.50.

Answer 4: it is 3 dollars per book. Because 15 divided by 5 is 3. At that rate we can buy 7 books because 7 times 3 is twenty one.

Answer 5: it is 0.25 per bracelet. We know this because 1 divided by 4 is 0.25. At that rate 11 bracelets will cost 2.75 dollars. We know this because 0.25 times 11 equals 2.75!

Hope this helps!
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