mprjug6
04.07.2019 •
Mathematics
The ratio of the number of mystery books to the number of science fiction books is 4 : 3. the ratio of the number of science fiction books to the number of biographies is 4 : 5. if there are 48 science fiction books, find the total number of books.
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Ответ:
220
Step-by-step explanation:
I believe the answer your looking for is:
64:48 for the first ratio.
48:60 for the second ratio.
Now we add them.
(48x) + (60x)
x = 2
(40x = 40 times 2, for example.)
Ответ: