分类：教育/科学-外语学习
问题：英语数学题attheendof2005walterwashalf 
at the end of 2005 walter was half as old as his grandmother,the sum of the years in which they were born is 3860,how old will walter be at the end of 2006?
回答： ,andwalter'sgarandmotherwas2Xyearoldtheendof2005,So(2005-X)+(2005-2X)=3860X=50Thenhowoldwillwalterbeattheendof2006Waltermustbe51theendof2006