OML Search

Work Word Problems





 
Related Topics:
More Lessons for Passport to Advanced Math

More Lessons for SAT Math

More Resources for SAT

Algebra Tutorials

This video is for the redesigned SAT which is for you if you are taking the SAT in March 2016 and beyond.

Calculator: Not Allowed
Passport to Advanced Math

\(\frac{1}{x} + \frac{2}{x} = \frac{1}{5}\)

Anise needs to complete a printing job using both of the printers in her office. One of the printers is twice as fast as the other, and together the printers can complete the job in 5 hours. The equation above represents the situation described. Which of the following describes what the \(\frac{1}{x}\) expression represents in this equation?

A) The time, in hours, that it takes the slower printer to complete the printing job alone
B) The portion of the job that the slower printer would complete in one hour
C) The portion of the job that the faster printer would complete in two hours
D) The time, in hours, that it takes the slower printer to complete \(\frac{1}{5}\) of the printing job

The correct answer is B) The portion of the job that the slower printer would complete in one hour.

The quickest method would be to recognize that the given equation is similar to the formula used for work problems:

formula

If we let x be the time taken by the slower printer then the time taken by the faster printer would be \(\frac{1}{2}x\) since it is twice as fast. Substitute that into the work formula and we get
\(\frac{1}{x} + \frac{2}{x} = \frac{1}{5}\)
More examples of work problems using algebra

Go to next Question




Rotate to landscape screen format on a mobile phone or small tablet to use the Mathway widget, a free math problem solver that answers your questions with step-by-step explanations.


You can use the free Mathway calculator and problem solver below to practice Algebra or other math topics. Try the given examples, or type in your own problem and check your answer with the step-by-step explanations.


OML Search


We welcome your feedback, comments and questions about this site or page. Please submit your feedback or enquiries via our Feedback page.


[?] Subscribe To This Site

XML RSS
follow us in feedly
Add to My Yahoo!
Add to My MSN
Subscribe with Bloglines