Need help with number 3

Mathematics

1 answer:

andrew-mc [135]3 years ago

4 0

A. 8 books per shelf.
So you find the greatest common denominator of 32 and 56.
$\frac{32}{56} \div 8 = \frac{4}{7}$
B. 11 shelves
The max # of books per shelf would be 8.
4 shelves of mystery and 7 shelves of biography.
4 + 7 = 11

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Now there are 6 + 6 + 3 = 15 marbles in the bag, and 6 of them are red ones. Then the probability of getting one red is the number of red ones divided by the total amount ( which is the ratio of red marbles to total marbles)

this is 6/15.

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