In four years, Suzy will be twice Mary's age then. If Suzy is 20 now, how old is Mary?
Дар чаҳор сол, Сузи ду баробар синни Мэри хоҳад буд. Агар Сузи ҳоло 20-сола бошад, Мэри чандсола аст?
How old will Suzy be in four years? ** In four years, Suzy will be 20+4=<<20+4=24>>24.
How old will Mary be in four years? ** Then Mary will be 24/2=<<24/2=12>>12.
How old is Mary now? ** Then Mary is now 12-4=<<12-4=8>>8.
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How old will Suzy be in four years? ** In four years, Suzy will be 20+4=<<20+4=24>>24.  
How old will Mary be in four years? ** Then Mary will be 24/2=<<24/2=12>>12.  
How old is Mary now? ** Then Mary is now 12-4=<<12-4=8>>8.  
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