Question

In: Advanced Math

A certain bookstore chain has two stores, one in San Francisco and one in Los Angeles....

A certain bookstore chain has two stores, one in San Francisco and one in Los Angeles. It stocks three kinds of book: hardcover, softcover, and plastic (for infants). At the beginning of January, the central computer showed the following books in stock.

   Hard Soft Plastic
San Francisco 2,000 3,000 6,000
Los Angeles 1,000 5,000 2,000


Suppose its sales in January were as follows: 200 softcover, 400 hardcover, and 400 plastic books sold in Los Angeles, and 1,300 softcover books, 1,900 plastic books, and 600 hardcover books sold in San Francisco.

(a) Write the given inventory table as a 2 ✕ 3 matrix.

   Hard Soft Plastic
San Francisco
Los Angeles



(b) Write the given sales figures as a similar matrix.

   Hard Soft Plastic
San Francisco
Los Angeles



(c) Compute the inventory remaining in each store at the end of January.

   Hard Soft Plastic
San Francisco
Los Angeles

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