Answer:
a) is spending too much on slacks and not enough on ties.
Step-by-step explanation:
Mr. Samuelson's current rates of purchase are such that the marginal utility of slacks is 18 and the marginal utility of ties for him is 5.
The slacks and ties are priced at $12 and $2 respectively.
MarginalUtilityslacks/Priceslacks = MarginalUtilityties/Priceties
18/12= 5/2
=> 1.5=2.5
Hence, we can conclude that :
He is spending too much on slacks and not enough on ties.