Math Problem Statement

After deciding on an apartment, you discover that you have to pay for basic utilities and some additional bills. You need to determine how many hours you need to work to cover these costs. The monthly rent is $1,000, monthly utilities are $225, and you make $8.25 per hour. Write an inequality to find the minimum hours needed to cover these costs, and solve for the minimum number of hours.

Solution

Let's break down the information provided in this problem to set up the inequality and solve for the minimum hours required.

Problem Breakdown:

  1. Monthly Rent: $1,000
  2. Monthly Utility Cost: $225
  3. Hourly Wage: $8.25 per hour
  4. Goal: Determine the minimum hours xx needed to work to cover rent and utilities.

Total Monthly Cost:

The combined cost of rent and utilities is: 1000+225=12251000 + 225 = 1225

Setting Up the Inequality:

To cover this total cost, you need to earn at least $1225 in a month. Let xx represent the number of hours worked in a month. The income can be represented by 8.25x8.25x, so the inequality to meet or exceed the expenses is: 8.25x12258.25x \geq 1225

Solving for xx:

To find the minimum hours xx, divide both sides by 8.25: x12258.25x \geq \frac{1225}{8.25}

Calculating that gives: x148.48x \geq 148.48

Since you can't work a fraction of an hour in most scenarios, round up to the nearest whole number: x149x \geq 149

Answer:

The minimum number of hours you need to work per month to pay these bills is 149 hours.


Would you like more details or have any other questions?

Related Questions:

  1. How would the inequality change if the hourly wage increased?
  2. What if there was an additional monthly bill? How would that affect the required hours?
  3. How can you calculate the number of hours needed if you have multiple income sources?
  4. What if the hourly wage was variable each month? How would that impact the inequality setup?
  5. How would working overtime (at a higher rate) affect the number of hours needed?

Tip:

When solving inequalities involving real-world scenarios, always consider rounding up since partial units (like hours) might not always be feasible or practical.

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Math Problem Analysis

Mathematical Concepts

Linear Inequalities
Basic Algebra

Formulas

Hourly Wage × Hours Worked ≥ Total Monthly Expenses

Theorems

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Suitable Grade Level

Grades 8-10