SOLUTION: A worker can assemble 3 shelf units each hour. During the fifth hour of the shift, there were 115 shelf units in the warehouse. How many units were assembled before the shift start

Algebra ->  Quadratic Equations and Parabolas  -> Quadratic Equations Lessons  -> Quadratic Equation Lesson -> SOLUTION: A worker can assemble 3 shelf units each hour. During the fifth hour of the shift, there were 115 shelf units in the warehouse. How many units were assembled before the shift start      Log On


   

Question 774686: A worker can assemble 3 shelf units each hour. During the fifth hour of the shift, there were 115 shelf units in the warehouse. How many units were assembled before the shift started?
Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
( 3 shelf units ) / ( hour ) x ( 5 hours ) = 15 shelf units
+115+-+15+=+100+
100 units were assembled before the shift started