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rlevkovch
25.03.2021 •
Mathematics
The number of cars, x, parked at a mall can be represented by the inequality
5x+20<400
Which of the following conclusions is true?
Solved
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Ответ:
Cuzin Bj Odin
Ответ:
Given parameters:
Ratio of organic to non-organic = 2:8
Total number of pages in the book = 400
Unknown:
Number of pages of organic = ?
Number of pages of non-organic = ?
Ratios establishes the proportion of parts in a whole.
We can find the whole from the part and likewise the part from the whole if we know the ratio;
To solve this problem;
Sum up the ratio ; 2 + 8 = 10
Number of pages of organic =
= 80pages
Number of pages of non-organic =
= 320pages
We need 80 pages of organic and 320 non- organic pages to make up the chemistry book.