hard · GMAT Quant
A chemical manufacturer sells solvent under a volume discount schedule. For orders up to 100 liters, the price is $8 per liter. For orders between 101 and 250 liters, inclusive, the first 100 liters cost $8 per liter and all additional liters cost $6 per liter. For orders exceeding 250 liters, a wholesale rate of $5 per liter applies to the ENTIRE order. A buyer placed an initial order of 200 liters.
How many additional liters would the buyer need to add to this order so that the total cost of the revised order is equal to the cost of the original 200-liter order?
- 50
- 60
- 80
- 100
- 120
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