a. What is the marginal benefit from sunscreen and how is it measured? b. Draw a graph

Question:

a. What is the marginal benefit from sunscreen and how is it measured?
b. Draw a graph of Sunland’s marginal benefit from sunscreen.
The table describes the preferences in Sunland.
SunscreenWillingness to pay
(litres per month)(kilograms of food per litre)
25 …………………………………………………3
75 …………………………………………………2
125 ……………………………………………….1