Suppose you own 11 bronze coins worth a total of $150, 11 silver coins worth a total of $160, and 11 gold coins worth a total of $170. Develop a linear integer model to find a combination of coins...

Suppose you own 11 bronze coins worth a total of $150, 11 silver coins worth a total of $160, and 11 gold coins worth a total of $170. Develop a linear integer model to find a combination of coins worth exactly $110.

A single-shelf bookcase can hold books that are a total of 24 feet wide. We need to store 19 books of the widths (in feet) listed in the file P06_90.xlsx. Develop a linear integer model to determine the minimum number of bookcases that are needed to store all 19 books.