How to Solve Problems with Time


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question 1 of 3

Emily can rake her lawn in 5 hours. Andrew can rake the same lawn in 8 hours. Rounded to the nearest hour, how long will the job take if they work together?

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1. Adam and Kevin are roommates. Adam can clean their apartment in 45 minutes. Kevin can clean it in 60 minutes. Rounded to the nearest minute, how much time will it take if they work together?

2. Amy, Barry and Carter are building a fence. Together, it takes them 4 hours. If Amy worked alone, it would take her 14 hours. If Carter worked alone, it would take him 16 hours. Rounded to the nearest hour, how long would it take Barry to build the fence alone?

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About This Quiz & Worksheet

Solving problems involving time requires an understanding of the work rate formula, and this quiz/worksheet combo will help you test your understanding of this concept. The quiz questions will help you test your understanding of how to apply the work rate formula.

Quiz & Worksheet Goals

In these assessments, you'll be tested on your ability to do the following:

  • Remember the work rate formula
  • Apply this formula to practice problems
  • Correctly solve questions for time using the work rate formula

Skills Practiced

This quiz and worksheet will allow you to test your skills in the following areas:

  • Reading comprehension - ensure that you draw the most important information on using the work rate formula for solving problems with time
  • Critical thinking - apply relevant concepts to examine time-related problems comparing one or more individuals completing the tasks
  • Problem solving - use your acquired knowledge to solve practice problems that involve time and the work rate formula

Additional Learning

To learn more about solving problems with time, review the accompanying lesson. This lesson covers the following objectives:

  • Define the work rate formula
  • Describe how to use the work rate formula to solve for time
  • Understand how to solve problems involving individuals or more than two people