You are given a math word problem and you are supposed to apply multiplication or division mathematical operators on the numbers embedded in the text to answer the following question and then only report the final numerical answer.
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Question: Christopher strolled 5 miles at 4 miles per hour . How long did Christopher stroll ?

Answer: 1.25


Question: A pet store has 6 bird cages . If each cage has 2 parrots and 7 parakeets in it , how many birds does the pet store have total ?

Answer: 54


Question: A neighborhood grocer sells a mix of chocolate and carob candy . The chocolate cost 2.7 dollars a pound and the carob costs 2.55 dollars a pound . If 20 pounds of the chocolate and 40 pounds of the carob candy are used , what is the cost per pound of the mixture in dollars ?

Answer:
2.6