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prealgebra junior
Problem
The average cost of a long-distance call in the USA in was cents per minute, and the average cost of a long-distance call in the USA in was cents per minute. Find the approximate percent decrease in the cost per minute of a long- distance call.
(A)
(B)
(C)
(D)
(E)
Solution
The percent decrease is (the amount of decrease)/(original amount) the amount of decrease is so the percent decrease is which is about
Final answer
E