If two goods provide the same total utility but have different prices, it is always optimal to allocate more of the budget to the cheaper good to maximize overall satisfaction.

When we talk about total utility, we mean the overall satisfaction or happiness we get from consuming goods. If two goods give us the same total utility but one is cheaper, it makes sense to buy more of the cheaper good because we can get the same satisfaction for less money. This way, we can save some of our budget or use that saved money to buy even more of the cheaper good or something else we enjoy. For example, if you can get 10 units of satisfaction from a $5 pizza or a $10 burger, choosing the pizza allows you to spend less while getting the same level of happiness. Thus, by allocating more of your budget to the cheaper good, you maximize your overall satisfaction and make your money go further.