1. A tourist purchased a total of $1500 worth of traveler's check in $10 and $50 denominations. During the trip the tourist casehed 7 checks and then lost all of the rest. If the number of $10 checks cashed was one more or one less that the number of $50 checks cashed, what is the minimum possible value of the checks that were lost? (A) $1430 (B) $1310 (C) $1290 (D) $1270 (E) $1150 答案是D 7. Tickets for all but 100seats in a 10000-seat stadium were sold. Of the tickets sold, 20 percent were sold at half price and the remaining tickets were sold at the full price of $2. What was the total revenue from tickets sales? (A) $15840 (B) $17820 (C) $18000 (D) $19800 (E) $21780 答案是B 實在想不出來^^a~請教大家一下 謝謝!! --

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