You installed a bookshelf on the wall to organize some of your books. The books that you absolutely want o the shelf weigh a total of 6 3/4 pounds. The bookshelf can handle o more than 9 pounds. You plan on filling the rest of the shelf with your paperbacks that each weigh about 1/8 pound. Assuming you won't run out of room, how monay paperback can you add to the shelf?

9 - 6 3/4 = 2 1/4

The shelf can now handle only 2 1/4 pounds of weight

Now 2 1/4 = 9/4
which is 18/8

Thus you can add 18 paper backs!!