Karina was born in 1970 and she is currently twice as old as her brother. If her current age is 40, in what year was her brother born?
Карина дар соли 1970 таваллуд шудааст ва ҳоло ду баробар аз бародараш калонтар аст. Агар синни ҳозирааш 40 бошад, бародараш дар кадом сол таваллуд шудааст?
How old is Karina's brother? ** If Karina is currently 40, and she is twice as old as her brother, then her brother is currently 40/2 = <<40/2=20>>20 years old.
How old was Karina's brother when he was born? ** If Karina was born in 1970, then her brother was born in 1970+20 = <<1970+20=1990>>1990
#### 1990
How old is Karina's brother? ** Агар Карина ҳоло 40-сола бошад ва ӯ ду баробар калонтар аз бародараш бошад, пас бародараш ҳоло 40/2 = <<40/2=20>>20-сола аст.  
How old was Karina's brother when he was born? ** Агар Карина дар соли 1970 таваллуд шудааст, пас бародараш дар соли 1970+20 = <<1970+20=1990>>1990 таваллуд шудааст.  
#### 1990