Helen is twenty years old ,and her age is four times as much as Mary 's.When Helen 's age is twi...Helen is twenty years old ,and her age is four times as much as Mary 's.When Helen 's age is twice as much as Mary 's ,how old Helen then ?

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Helen is twenty years old ,and her age is four times as much as Mary 's.When Helen 's age is twi...Helen is twenty years old ,and her age is four times as much as Mary 's.When Helen 's age is twice as much as Mary 's ,how old Helen then ?
Helen is twenty years old ,and her age is four times as much as Mary 's.When Helen 's age is twi...
Helen is twenty years old ,and her age is four times as much as Mary 's.When Helen 's age is twice as much as Mary 's ,how old Helen then ?

Helen is twenty years old ,and her age is four times as much as Mary 's.When Helen 's age is twi...Helen is twenty years old ,and her age is four times as much as Mary 's.When Helen 's age is twice as much as Mary 's ,how old Helen then ?
翻译：Helen20岁,她的年龄是Mary的4倍.当Helen的年龄是Mary的两倍的时候,Helen多少岁?
回答：Helen is 30 years old then.到那时Helen30岁

Helen = 20岁
Mary = 5 岁
当helen的年龄是mary的双倍，那helen多大了？

Helen 现在20岁，是 Mary岁数的4倍。当 Helen的年纪是 Mary的2倍时， Helen几岁?

Helen is twenty years old ,and her age is four times as much as Mary 's.When Helen 's age is twi...Helen is twenty years old ,and her age is four times as much as Mary 's.When Helen 's age is twice as much as Mary 's ,how old Helen then ? how many subjects is helen going to study this year?翻译 Helen is （）A.14-year-old B.14 years old Twenty and twenty is f_____. John is twenty year old ,but he has only five birthdays.Why? My name is Helen.针对“Helen”提问 This is Helen. twenty-year-old twenty years old 两个怎么用? what is twenty plus twenty an done is Twenty plus three is twenty一three. Helen is Russian.(划线部分提问）填：( )( ) is Helen? she is his sister,helen. My name is Helen.翻译 Helen ,name ,her ,first ,is Helen is good()English.快 Sally is ------- ------- taller than Helen. This is Helen中文怎么说