Gemstone processing company

Two types of gemstone products: ruby and jade

Gemstones requires time for gathering and smoothing. Unit profit

and time constraints information are provided below:

Upper and lower bounds for demand

Upper bound on the total demand for ruby: $8$ units

Lower bound on the total demand for jade: $3$ times ruby production $-20$

$2$d LP example

A two variable LP example

x:ruby, y: jade

$(1)$

$(2)$

$(3)$

$(4)$

$(5)$

$3-1.$ What is the allowable

increase of the RHS$?$

$8$

$1$

$3-2.$ What is the allowable

decrease of the RHS$?$