It would cost them $ 3pc. here each p person would bring 2 persons with them. thus they are three in number.. so, as p people are invited, the no. of persons would be 3p ., the cost would be 3p*c= 3pc$
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  • Brainly User
Total no of people = 3p
cost to feed each person = c dollars
total cost = 3pc dollars
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