Menthol and methyl salicylate are the main active ingredients of peppermint. Internally, they have anti-spasmodic actions, with calming effects on the muscles of the stomach, intestinal tract, and uterus.
âHowever, if you have three kids, ages 11, 13, and 16, your costs will be $25,880 â in other words, the third kid is costing just $2,880 extra.â. And very big families, she says, believe this is true.âAll of them told me that the marginal cost of children falls precipitously,â she said.âIâm sure this is partly true, though it also depends on what you plan to do for the kids â most of them donât plan to pay for college. They also tend not to buy plane tickets for 16 people.â. Her conclusions so far:arsing Department of Agriculture data (click here and see Page 7) she finds that âif you have two kids, ages 13 and 16, your costs as a middle-income family will be $23,000 per yearâ to feed, house and clothe them.
Profit Maximization. When the marginal costs equal marginal revenues, a firm maximizes its profit. In the example, the total cost of producing three shirts is $18. If each shirt sells for $1, the total profit is $27.Since marginal revenue is $15 and marginal cost is $3, it means the firm can still produce more units to increase profits.ake a shirt factory for example. If the total cost of producing one shirt is $10 and two shirts is $15, the marginal cost of producing the second shirt is $5. If the total cost of producing three shirts is $18, the marginal cost of the third shirt is $3.