Transport cost per unit — Caselets Aptitude Question
Transport cost per unit: A firm ships 2,400 units in lorries carrying 150 units each. Each lorry trip costs ₹4,500. Answer and worked solution on CodeKairo.
- Topic: Caselets
- Section: Data Interpretation
- Difficulty: Medium
- Time target: 90 seconds
Question
A firm ships 2,400 units in lorries carrying 150 units each. Each lorry trip costs ₹4,500.
What is the transport cost per unit?
Options
- ₹25
- ₹30
- ₹35
- ₹45
Show the answer and the worked solution
Correct answer: B. ₹30
Worked solution
- Trips needed = 2,400 ÷ 150 = 16.
- Total cost = 16 × 4,500 = ₹72,000.
- Per unit = 72,000 ÷ 2,400 = ₹30.
Answer: ₹30.
The idea
Chain the units: units to trips, trips to rupees, rupees back to per unit. Dividing the trip cost by the lorry capacity gives ₹30 directly as well.
Shortcut. Test the options on one lorry: 150 units × ₹30 = ₹4,500, exactly one trip, and 2,400 = 16 full lorries, so no part-empty trip raises the cost.
Common trap. "₹45" — dividing the ₹4,500 trip cost by 100 instead of by the 150-unit load.