A Professor Needs Help from Three Student Helpers to Complete

question 75

Multiple Choice

A professor needs help from three student helpers to complete four tasks. The first task is grading; the second is scanning; the third is copying, and the fourth is organizing student portfolios. The estimated time for each student to do each task is given in the matrix below.
$$\begin{array} { r r r r r } & \mathbf { 1 } & \mathbf { 2 } & \mathbf { 3 } & \mathbf { 4 } \\\hline \text { Student A } & 90 & 50 & 40 & 20 \\\mathbf { B } & 120 & 60 & 30 & 50 \\\mathbf { C } & 110 & 60 & 50 & 70 \\\hline\end{array}$$
-Which of the following constraints represents the assignment for student A?

• A) XA1 +XA2 + XA3 + XA4 = 0
• B) XA1 +XA2 + XA3 + XA4 = 1
• C) XA1 +XA2 + XA3 + XA4 ? 1
• D) XA1 +XA2 + XA3 + XA4 ? 0

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Definitions:

Face Value

The nominal or dollar value printed on a financial instrument such as a bond or stock certificate, representing the value the issuer promises to pay at maturity.

Investment Yield

The earnings generated and realized on an investment over a particular period of time, expressed as a percentage of the investment's cost.

Maturity Date

The final payment date of a loan or other financial instrument, at which point the principal (and all remaining interest) is due to be paid.

Compound Annual

The rate of return that would be required for an investment to grow from its beginning balance to its ending one, assuming the profits were reinvested at the end of each period of the investment's lifespan.