In a certain code language, ‘planes get going’ is coded as ‘pn lm pg’, and ‘hard work get’ is coded as ‘kt rk lm’. ‘hard is you’ is coded as ‘ab rk fg’. What can be the code for ‘work’ in that language?

kt

Given; In a certain code language, ‘planes get going’ is coded as ‘pn lm pg’, and ‘hard work get’ is coded as ‘kt rk lm’. ‘hard is you’ is coded as ‘ab rk fg’. 

So,

PLANES  GET  ALONG  =  PN  LM  PG

HARD  WORK  GET  =  KT  RK  LM

HARD  IS  YOU  =  AB  RK  FG

And, 

Code for GET is LM, HARD is RK

Thus, WORK is KT