Step-by-step explanation:
If I am working on a task to get it complete in order to meet my ship goal, and my co worker asks me for help regarding something I know a lot about, then I would most likely to help him no matter how long I would have to work, no matter how much extra time I would have to put in order to complete my task, I would fully try to help him, instruct him and guide him whenever he needs me. And I would least likely to say him No to help him. There is no way to say a No to a person who needs your help and especially when you are fully knowledgeable of the thing he is asking about.