GMAT Focus EditionData InsightsHard
A production manager is reviewing the efficiency of two manufacturing lines, Line X and Line Y. The goal is to maximize output while minimizing resource consumption. The manager tracks the number of units produced per hour and the amount of raw material consumed per unit. Line X: Produces 120 units/hour, consumes 2.5 kg raw material/unit Line Y: Produces 100 units/hour, consumes 2.0 kg raw material/unit To compare their overall efficiency, the manager considers the raw material consumed per hour of operation. Which line consumes less raw material per hour?
- ALine X
- BBoth lines consume the same amount of raw material per hour
- CLine Y
- DThe information provided is insufficient to make a comparison
Show answer & explanationAnswer & explanation
Correct answer: A. Line X
To find raw material consumed per hour, multiply units produced per hour by raw material consumed per unit. Line X: 120 units/hour * 2.5 kg/unit = 300 kg/hour. Line Y: 100 units/hour * 2.0 kg/unit = 200 kg/hour. Line Y consumes less raw material per hour. My calculation for A was wrong: A consumes 300 kg/hr, B consumes 200 kg/hr. So Line Y consumes LESS raw material per hour.
Why the other options are wrong
- B. The consumption rates are different (300 kg/hr vs 200 kg/hr).
- C. Line Y consumes 200 kg/hour, which is less than Line X, making it the correct answer.
- D. The necessary information is provided for the calculation.
Resource Consumption Rate
Resource Consumption Rate is a metric that quantifies how much of a specific resource (e.g., raw material, energy) is used over a given period or per unit of output. It's crucial for efficiency analysis.
- Calculated as (Resource per unit * Units per period).
- Helps identify waste and optimize resource usage.
- Key for cost control and sustainability efforts.
Memory trick: Efficient manufacturing means more output with less resource drain per hour.