What is the law of equalising the weighted marginals utilities means?

The law of equalizing the weighted marginal utilities states that consumers maximize their utility when the ratio of the marginal utility to the price of each good is equal across all goods. This means that consumers allocate their budget in such a way that the last unit of currency spent on each good provides the same level of additional satisfaction or utility. In simpler terms, it implies that resources are optimally distributed among different goods to ensure that no reallocation would increase overall utility. This principle is fundamental in consumer choice theory within economics.