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jmc

prealgebra senior

Problem



Juan organizes the stamps in his collection by country and by the decade in which they were issued. The prices he paid for them at a stamp shop were: Brazil and France, cents each, Peru cents each, and Spain cents each. (Brazil and Peru are South American countries and France and Spain are in Europe.)
problem
What was the average price, in cents, of his stamps? Round your answer to the nearest tenth of a cent.
Solution
The stamps cost:

Brazil, 12(\ 0.06) = \

Peru, 6(\ 0.04) = \

France, 12(\ 0.06) = \

Spain, 13(\ 0.05) = \

The total is \2.3343\frac{\2.33}{43} \approx \0.054 = \boxed{5.4 \text{ cents}}.$
Final answer
5.4 \text{ cents}