A manufacturer of shipping crates made 3000 crates in month one. Labor cost was $200, material cost was $75, and overhead was $450. What was the multi-factor productivity in terms of crates/dollar? 2. In month two, the number of crates made was 3500, with labor cost of $220, material cost of $70, and overhead of $420. What was the multi-factor productivity in terms of crates/dollar? 3. Approximately what was the rate of productivity growth from month one to month two?