jack is twice as old as Bill,who is 8 years younger lhan Ben ,who is 4years younger than Ted,who ishalf as old again as jack.How old is Bill?谁能算出来 请速回.

Jack is twice as oid as bill.Jack is twice as old as Bill. that's easy,Bob is twice as old as jack,so he is now thirty.中的as old as jack is twice as old as Bill翻译成汉语甚么意思 MARY IS 12 YEARS OLD .TWO YEARS AGO ,SHE WAS TWICE AS OLD AS HER BROTHER JACK.HOW OLD IS JACK IS? 急mary is 12 years old .two years ago ,she was twice as old as her brother jack.how old is jack now? Mary is 12 years old.Two years ago, shewas twice as old as her brothei jack,How old is jack now? 英语翻译Jack is twice as old as Bill,who is eight years younger than Ben,who is four years younger than Ted,who is half as old again as Jack.How old is Bill? 剑桥少儿英语第二级A第9课习题Jack is twice as old as Bill,who is eight years younger than Ben,who is four years younger than Ted,who is half as old as Jack.How old is Bill? 英语翻译Jack is twice as old as Bill ,who is eight years younger than Ben,who is four years younger than Ted,who is half as old again as Jack,How old is Bill? 英语翻译Jack is twice as old as Bill,who is eight years younger than Ben,who is four years younger than Ted,who is half as old again as Jack.How old is Bill?我翻译的不太明白, Jack is 15 years old,three times as old as his sister.How old will Jack and his sister be when he is twice as old as his sister? jack is twice as old as Bill,who is 8 years younger lhan Ben ,who is 4years younger than Ted,who ishalf as old again as jack.How old is Bill?谁能算出来 请速回. Who can stop many trucks with one hand?Many is 12 years old.Two years ago,she was twice as her brother Jack.How old is Jack now? Jack is twice as old as Jill,but in five years time he will only be one and a half times as old as Jill.How old are Jack and Jill now? 英语翻译Jack is twice as old as Jill,but in five years time he will only be one and a half times as old as Jill.How old are Jack and Jill now? 英语开放探究题1.Mary is 12 years old.two years ago,she was twice as old as her brother Jack.How old is Jack now?How old will Mary be when Jack is twice his present age?2.Peter is 15 years old.Three years ago,his younger sister Michaelle was ha Mary is 12 years old.Two years ago,she was twice as old as her brother Jack.How old is Jack now?我读不太懂这是什么意思,希望英语能手能帮帮我回答这个问题 Jack is twice as old as Jill ,but in five years time he will only be one and a half as old as Jill.Jack和Jill今年几岁?