Did You Kena Tipu By The Old Man?

If you don't know. You can check your science paper one question number22 for the trial. Of cuz, is form 3 trial.

Eventually, there is an old man walking up the stairs while holding a sack. You have to find the work done for it. But! this question is very tricky. They only labeled the height of the stairs (5m) and only tell you the old man's weight (54kg).

If your not aware, you will get wrong not put B 2160J for the answer = 54kgX10NX5m. THANK GOD I SAW THAT! A lot people are so frustrated, haha. I will upload the picture of that question soon. But, I am not sure i can get an A for it now. Well gotta go to study See Ya.