If it has to do with a chapter on Rational Expressions and Equations, the the equation is ''work rate'' x ''time'' = ''work done''. Just substitue the information from the problem and voila! , you get your answer! Don't forget to put the stuff, like minutes or hours.
If it has to do with a chapter on Rational Expressions and Equations, the the equation is ''work rate'' x ''time'' = ''work done''. Just substitue the information from the problem and voila! , you get your answer! Don't forget to put the stuff, like minutes or hours.