Math Problem Statement

et up the following linear programming problem. The variables have already been defined for you. Be sure to indicate whether the objective function is being maximized or minimized. You may not need all of the blanks provided for the constraints. Ruby has a hard time being productive on the weekends, so she likes to pretend she’s on a game show called “You. Better. Work!” On this imagined game show, she earns 100 points for each homework assignment she completes and 50 points for each household chore she completes. This weekend, Ruby has at most 8 hours with which to complete tasks. She estimates that each homework assignment will take 1 hour to complete, and each household chore will take 45 minutes to complete. However, she has no more than 5 homework assignments that she needs to complete this weekend. How many of each task should Ruby complete in order to earn the most points possible? Variables: h := the number of homework assignments completed c := the number of household chores completed P := the number of points earned while playing “You. Better. Work!” Objective: Maximize / Minimize Subject to: 1

Solution

Let's set up the linear programming problem based on the given information.

Objective:

Maximize the number of points PP.

Variables:

  • hh: number of homework assignments completed
  • cc: number of household chores completed
  • PP: number of points earned

Objective Function:

Since Ruby earns 100 points for each homework assignment and 50 points for each household chore, the objective function is: P=100h+50cP = 100h + 50c Objective: Maximize PP

Constraints:

  1. Time Constraint: Ruby has at most 8 hours (480 minutes) to complete all tasks. Each homework assignment takes 1 hour (60 minutes) and each household chore takes 45 minutes. 60h+45c48060h + 45c \leq 480 Simplifying this constraint by dividing by 15: 4h+3c324h + 3c \leq 32

  2. Homework Assignment Constraint: Ruby has no more than 5 homework assignments to complete. h5h \leq 5

  3. Non-negativity Constraints: Ruby cannot complete a negative number of tasks. h0h \geq 0 c0c \geq 0

Summary of the Linear Programming Problem:

Maximize: P=100h+50cP = 100h + 50c

Subject to:

  1. 4h+3c324h + 3c \leq 32
  2. h5h \leq 5
  3. h0h \geq 0
  4. c0c \geq 0

Would you like me to solve this linear programming problem or provide more details on any part of it?

Related Questions:

  1. How do you solve linear programming problems using the graphical method?
  2. What is the role of the objective function in a linear programming problem?
  3. How do constraints affect the feasible region in linear programming?
  4. What methods can be used to solve linear programming problems besides the graphical method?
  5. How does changing the coefficients in the objective function affect the optimal solution?

Tip: Always check the feasibility of the solution by verifying if it satisfies all the constraints before concluding it as the optimal solution.

Ask a new question for Free

By Image

Drop file here or Click Here to upload

Math Problem Analysis

Mathematical Concepts

Linear Programming
Optimization
Inequalities

Formulas

Objective Function: P = 100h + 50c
Time Constraint: 60h + 45c ≤ 480 (or simplified 4h + 3c ≤ 32)
Homework Constraint: h ≤ 5
Non-negativity Constraints: h ≥ 0, c ≥ 0

Theorems

Linear Programming Feasibility Theorem

Suitable Grade Level

Grades 10-12