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请用英语回答,还有,要用中文写出解题过程,

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请用英语回答,还有,要用中文写出解题过程,
1.It has five letters.It has six left if you take two letters away.What is it?
2.Jack is twice as old as Jill now ,but in five years he will only be one and a half times as old as Jill.How old are Jack and Jill now?
3.16 June falls on a Wednesday in 2004.On what day of the week will 16 June fall in 2010?
4.If half of a number is 30,then what is three-quarters of that number?
5.A lady,her brother,her son and her daughter(all related by birth)played volleyball.The worst player's twin(who is one of the four players)and the best player are of opposite sex.The worst player and the best player are of the same age.Who can be the worst player(s)?
请用英语回答,还有,要用中文写出解题过程,
1、sixth 有5个字母,去掉两个字母剩下six
2、Jack is 10 years old,Jill is 5years old
Jack=2*Jill
Jack+5=1.5*(Jill+5) 解得Jack=10,Jill =5
3、Wednesday 2004年6月16离2010年6月16有365*6+1天(2008年是闰年),即2191天,除以7,余数为零,说明仍是星期三
4、45 一半是30,四分之三是45
5、her brother or her son 一种情况是她弟弟是最差的,儿子是最好的,另一种情况是儿子是最差的,弟弟是最好的