 
 <prompt> "Tatuya, Ivanna, da Dorothy suka samu kwiyar tashin. Tatuya ta samu kwiyar labarai dubu da Ivanna, da Ivanna ta samu 3/5 daga cikin alamomin Dorothy. Idan Dorothy ta samu 90 alamomin, gyara alamomin da suka samu aiki uku." <response>: ```Saboda Dorothy ta samu 90 alamomi, kuma Ivanna ta samu 3/5 daidai alamomi, Ivanna ta samu 3/5*90 = 54 alamomi.
A lokacin da Dorothy da Ivanna suka samu jumla na 54+90 = 144 alamomi.
Idan Tayuta ta samu goma sha biyu daidai alamomi da Ivanna, ta samu 2*54 = 108 alamomi.
Jumla na alamomin da uku suka samu kowacewa shine 108+144 = 252 alamomi.
Alamomin da uku suka samu kowacewa shine 252/3 = 84 alamomi.

Javobi shine 84.``` 