SOLUTION: An old-model machine can stamp 1000 parts in 4 hours, but his helper would require 6 hours to do it alone. How long will it take them to do it if they work together.
Algebra ->
Rate-of-work-word-problems
-> SOLUTION: An old-model machine can stamp 1000 parts in 4 hours, but his helper would require 6 hours to do it alone. How long will it take them to do it if they work together.
Log On
Question 75816: An old-model machine can stamp 1000 parts in 4 hours, but his helper would require 6 hours to do it alone. How long will it take them to do it if they work together. Answer by checkley75(3666) (Show Source):
(