The table below shows the marginal utility a costumer would get by purchasing various quantities of A, B, and C. The product prices for A, B, and C are $3, $2, and $1 respectively. The consumer has $20 to spend on the three products.
(1) (2) (3)
Unit of Marginal Marginal Marginal
product utility, A utility, B utility, C
First 30 22 12
Second 27 20 10
Third 24 18 8
Fourth 21 16 6
Fifth 18 14 4
Sixth 15 12 2
(a) What will be the consumer's utility maximizing combination of goods A, B, and C?
(b) What will be the consumer's total utility?