Question: A mixture of two types of tea costs $5 per kg and $7 per kg. If 10 kg of the first type is mixed with 5 kg of the second type, what is the cost per kg of the mixture?
Options:
Correct Answer: $6.00
Solution:
Total cost = (10 * 5) + (5 * 7) = 50 + 35 = $85. Total weight = 10 + 5 = 15 kg. Cost per kg = 85/15 = $5.67.