Answer:
8 books
4 mystery shelves and 7 biography shelves
Step-by-step explanation:
To arrive at each figure, the multiples of 32 and 56 are
32=2*2*2*2*2
56=2*2*2*7
You notice that each term hss 2*2*2=8 hence the number of books per shelf is 8
Since mystery books are 32 and a shelf has 8 books then the number of shelves will be 32/8= 4 shelves. Similarly, for biography books, the number of shelves will be 56/8= 7 shelves