Alberto derives utility from reading books and from eating apples. Alberto gets 30 units of marginal utility from his first book, 27 units of marginal utility from his second book, 24 units of marginal utility from his third book, and so on, with marginal utility declining by three units for each additional book. Alberto gets six units of marginal utility for each of his first three apples consumed, five units of marginal utility for each of his next three apples consumed, four units of marginal utility for each of the following three apples consumed, and so on, with marginal utility declining by one for every three apples consumed. A book costs three dollars but an apple costs only one dollar. Alberto has 18 dollars. Construct a chart similar to Table 6.5 in the text (Marginal Utility Per Dollar) to determinethe consumption of books and apples that will maximize Alberto's utility. Use the rule for maximizing utility, where consumption occurs where the marginal utility per dollar spent is the same for both goods. Make sure Alberto spends his entire budget.How many books and apples will Alberto consume?

Please explain.