WORK PROBLEMS: GUIDED PRACTICE
 

A TYPICAL WORK PROBLEM

Carol mows a lawn in 5 hours.
Julia mows the same lawn in only 3 hours.

How long will it take if they mow the lawn together?

The concepts needed to solve work problems were thoroughly discussed in Work Problems: Basic Concepts.
Work Problems: Quick-and-Easy Estimates discussed estimating techniques which are used on this page.

This lesson gives a detailed solution for the two-person work problem shown above.
There is also step-by-step guided practice, so you can achieve mastery.

DETAILED SOLUTION: BOTH INDIVIDUAL RATES KNOWN;
FIND THE TIME IT TAKES WHEN WORKING TOGETHER

Choose Your Own Names!
The Step-by-Step Guided Practice (below)
will be MORE FUN if it uses people you know!
So... take a minute and put in some names!

male:            female:  

We'll let you know when a name has been added!

STEP-BY-STEP GUIDED PRACTICE


To get a new problem, click the "New Problem" button at left!
Check the "Two People Can Do the Job at the Same Time" assumption:
Check the Individual Rates Assumption:
Get an estimate for the answer:
Identify and rename the individual rates:
Compute the combined rate:
Rename the combined rate:
State your conclusion in a desired way:

Back to the top to try another problem!

When you're done practicing, move on to:
Exponents

 
 
CONCEPT QUESTIONS EXERCISE:
On this exercise, you will not key in your answer.
However, you can check to see if your answer is correct.
PROBLEM TYPES:
1 2 3
AVAILABLE MASTERED IN PROGRESS

(max is 3; there are 3 different problem types)