Given: Let us try to do this question with the LCM method As time taken by Amir to complete the work = 30 days Time taken by Akbar to comlpete the same work = 15 days Calculations: As we can see in the given figure, total work be = 30unit ∴ Efficiency of Amir = 30unit/ 30 days = 1unit/day ______ ( 1 ) And Efficiency of Akbar = 30unit/15 days = 2unit/day ______ ( 2 ) ⇒ Work done by Akbar in 8 days =8×2=16 unit ⇒ Work left for Amir =30–16=14 unit ⇒ Time taken by Amir to do 14 unit work = 14/1 = 14 days