Three years ago, Bethany was twice the age of her younger sister. In 5 years, her younger sister will be 16. How old is Bethany now?
Се сол пеш, Бетани ду маротиба синни хоҳараш буд. Дар 5 сол, хоҳараш 16-сола хоҳад шуд. Бетани ҳоло чандсола аст?
How old is Bethany's sister now? ** First find how old Bethany's sister currently is: 16 years - 5 years = <<16-5=11>>11 years
How old was Bethany's sister 3 years ago? ** Then find how old her sister was 3 years ago: 11 years - 3 years = <<11-3=8>>8 years
How old was Bethany three years ago? ** Then double that age to find how old Bethany was three years ago: 8 years * 2 = <<8*2=16>>16 years
How old is Bethany now? ** Then add 3 years to that number to find how old Bethany is now: 16 years + 3 years = <<16+3=19>>19 years
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How old is Bethany's sister now? ** Аввал пайдо кунед, ки хоҳари Бетани ҳоло чандсола аст: 16 сол - 5 сол = <<16-5=11>>11 сол  
How old was Bethany's sister 3 years ago? ** Сипас пайдо кунед, ки хоҳари ӯ 3 сол пеш чандсола буд: 11 сол - 3 сол = <<11-3=8>>8 сол  
How old was Bethany three years ago? ** Сипас он синро ду баробар кунед, то пайдо кунед, ки Бетани 3 сол пеш чандсола буд: 8 сол * 2 = <<8*2=16>>16 сол  
How old is Bethany now? ** Сипас 3 сол ба он рақам илова кунед, то пайдо кунед, ки Бетани ҳоло чандсола аст: 16 сол + 3 сол = <<16+3=19>>19 сол  
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