Answer:
41 1/4 and 15
Explanation:
So for the first question, we know that a single inch of thread has 16 1/2 bolts. We know that there are 2 1/2 inches of thread.
To find the total anount of bolts in the thread, we can multiply 2 1/2 by 16 1/2:
2 1/1*16 1/2 = 41 1/4
That is our first answer.
For our next answer, we know that a book is 1 7/8 inches big.
The bookshelf is 28 1/8 inches big.
To find how many of the 1 7/8 inch big books can fit in the 28 1/8 inch big bookshelf, we can divide 28 1/8 by 1 7/8:
28 1/8/1 7/8
=
15
So our 2nd answer is 15.
Hope this helps!