Sam likes eating ice-cream. Below is the marginal benefit (MB). He will derive from the consumption of an additional n-th unit of ice-cream.

n MB($)

1 58

2 45

3 34

4 26

5 14

6 5

Based on the above information, answer the following two questions

(1) What is the total benefit from the consumption of 4 units of ice-cream ?

(2) What is the average benefit from the consumption of 4 units of ice-cream in dollars per unit ?