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Max@Math Revolution
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Que: A shipping company consists of 40 ‘type A’ ships at the beginning of 2010. At the end of each year, starting with 2010, the company retired 5 of the ‘type A’ ships and acquired 8 new ‘type B’ ships. How many years did it take before the number of ‘type A’ planes left in the company was less than 40 percent of the ships?
(A) 2
(B) 3
(C) 4
(D) 5
(E) 6
(A) 2
(B) 3
(C) 4
(D) 5
(E) 6
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