【題目】Seven years ago, Scott was 3 times as old as Kathy was at that time. If Scott is now 5 years older than Kathy, how old is Scott?

A. 12.5. B. 13. C. 14. D. 14.5.

【答案】D

【解析】句意：七年前，斯科特的年齡是凱西當(dāng)時的三倍。如果現(xiàn)在斯科特比凱西大5歲，斯科特多大了? 設(shè)斯科特的現(xiàn)在年齡為x, 凱西的年齡為x-5，那么x-7=3（x-5-7），x=14.5。故選：D。

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