SOLUTION: an older machine can do a job in 104 minuets, it takes only 40 minuets when a newer machine works simultaneously. how long would it take the newer machine to do the job working alo

Algebra ->  Algebra  -> Rate-of-work-word-problems -> SOLUTION: an older machine can do a job in 104 minuets, it takes only 40 minuets when a newer machine works simultaneously. how long would it take the newer machine to do the job working alo      Log On

 Ad: Algebrator™ solves your algebra problems and provides step-by-step explanations! Ad: Algebra Solved!™: algebra software solves algebra homework problems with step-by-step help!

 Word Problems: Rate of work, PAINTING, Pool Filling Solvers Lessons Answers archive Quiz In Depth

 Question 535304: an older machine can do a job in 104 minuets, it takes only 40 minuets when a newer machine works simultaneously. how long would it take the newer machine to do the job working alone?Found 2 solutions by nerdybill, oberobic:Answer by nerdybill(6962)   (Show Source): You can put this solution on YOUR website!an older machine can do a job in 104 minuets, it takes only 40 minuets when a newer machine works simultaneously. how long would it take the newer machine to do the job working alone? . Let x = time (minutes) it takes for newer machine alone then 40(1/104 + 1/x) = 1 multiplyb both sides 104x: 40(x + 104) = 104x 40x + 4160 = 104x 4160 = 64x 65 minutes = x Answer by oberobic(2304)   (Show Source): You can put this solution on YOUR website!Shared work problems like this one can be solved by considering the faction of the work that can be done in some period of time by each resource and then summing them to a total of 1. . The older machine takes 104 minutes to do the work, so we can say it does 1/104 of the job per minute. Working with the new machine, the job can be done in 40 minutes. . . . . . . . . So, the new machine can do the job in 65 minutes. . To check the work, compute how much work each machine will do in 40 minutes. . . . Correct. . Done.