Math Problem Statement
Solution
Let's break down the problem step by step to solve it:
Given:
- Anne earns $42 per hour.
- Her daily expense for dry cleaning is $75.
- She wants to earn more than $260 a day after covering her dry cleaning costs.
Let:
- be the number of hours she works.
Total earnings:
Anne's total daily earnings are .
Net earnings:
After deducting her daily expense of $75 for dry cleaning, her net earnings are .
Condition:
She wants her net earnings to be more than $260, so we set up the inequality:
Solve for :
-
Add 75 to both sides:
-
Divide both sides by 42:
Conclusion:
Anne must work at least 8 hours to meet her goal of making more than $260 a day.
Would you like further details or explanations on any part? Here are 5 related questions for deeper understanding:
- What would be Anne's total earnings if she worked for exactly 8 hours?
- How much would Anne earn if her dry cleaning cost increased to $100 per day?
- What if Anne received a raise and started making $50 per hour—how would that affect her working hours to reach the goal?
- How would her required hours change if her daily expense was reduced by 10%?
- What if she wanted to make exactly $400 per day after covering dry cleaning expenses—how many hours would she need to work?
Tip:
When solving inequalities, always remember to check your final solution by plugging it back into the original context to ensure it satisfies all conditions.
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Math Problem Analysis
Mathematical Concepts
Inequality
Linear equations
Formulas
Net earnings = Hourly wage * Hours worked - Expenses
Theorems
-
Suitable Grade Level
Grades 6-8