Consider this job as a distance that Gene, Michael, and Janet are completing together.
Total Distance of the Trip = Gene's Distance + Michael's Distance + Janet's Distance
-or-
Total Job = Gene's Portion + Michael's Portion + Janet's Portion
Distance Review
distance = rate * time
-or-
d = rt
What Do You Know?
- d = 1 (There is only 1 job.)
- Gene can complete the job in 5 hours.
- Michael can complete the job in 4 hours.
- Janet can complete the job in 10 hours.
1 = Gene's rate * t + Michael's rate * t + Janet's rate * t
What's Missing?
- Gene's rate
- Michael's rate
- Janet's rate
- t