Question 17
Kumbak is hungry and has decided to eat roti at his mess. His total joy after eating the first roti is 20 happiness points. He is still hungry and so he eats another roti, and the total happiness increases to 25 happiness points. Kumbak is still hungry and eats two more roties. His third roti makes his total happiness points as 27. His fourth roti makes it 29 points. Then, suddenly his friend Lakshman enters the mess and decides to join him. So Kumbak decides to eat a fifth and sixth roti which makes his happiness points become 23. Then what is the marginal utility at Kumbak’s ideal number of roties?