medium · GMAT Quant
A coffee shop blends 'Premium' beans ($14/kg) with 'Standard' beans ($8/kg) to create 30 kg of a custom blend that sells for $10/kg.
How many kilograms of 'Premium' beans were used in the blend?
- 15 kg
- 10 kg
- 20 kg
- 12 kg
- 18 kg
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