A consumer is deciding between purchasing two goods, A and B. Good A has a marginal benefit of $30 and a price of $10, while Good B has a marginal benefit of $20 and a price of $5. Which category accurately describes the consumer's optimal choice based on marginal benefit per dollar, and why?

To decide which good to buy, the consumer should look at the marginal benefit per dollar spent for each good. For Good A, the marginal benefit is $30, and the price is $10, so the marginal benefit per dollar is $30 divided by $10, which equals $3. For Good B, the marginal benefit is $20, and the price is $5, giving a marginal benefit per dollar of $20 divided by $5, which equals $4. Since Good B provides a higher marginal benefit per dollar than Good A, the consumer's optimal choice is to purchase Good B to get more value for their money. This means that by choosing Good B, the consumer maximizes their satisfaction based on the benefits they receive compared to what they pay.