计算题1.Answer: 2. Bill is eighteen years old, and his age is three times that of Mary.When Billis twic

题目简介

计算题1.Answer: 2. Bill is eighteen years old, and his age is three times that of Mary.When Billis twic

题目详情

计算题
1.
Answer:                                                                                
2. Bill is eighteen years old, and his age is three times that of Mary.  
When Billis twice as old as Mary, how old is he then?
Answer:                                                                        
题型:填空题难度:中档来源:同步题

答案

1. 8kg   2. 24 years old.

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