Question

【题目】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.

Answer 1

【答案】D

【解析】句意：七年前，斯科特的年龄是凯西当时的三倍。如果现在斯科特比凯西大5岁，斯科特多大了? 设斯科特的现在年龄为x, 凯西的年龄为x-5，那么x-7=3（x-5-7），x=14.5。故选：D。