Robin owns a horse stables and riding academy and gives riding lessons for children at "pony " her business operates in a competitive industry. robin gives riding lessons to 20 children per month. her monthly total revenue is $4,000. the marginal cost of pony camp is $200 per child. in order to maximize profits, robin should

answer: 20 percent

the fish culture has become a developing commercial practice in developing countries which is already prominent in developed countries of the world. the major fish protein demand is being supplemented in developing countries is   fishing to meet the needs of the growing population. therefore, in some developing nations, the percentage of animal protein from fish in the diet can be as high as 20 percent.