please provide the following answers

Michelle and Barack must decide who will take time off work to take a grand-child to a dental appointment. Barack works nearby and can manage this easily in one hour. For Michelle, it would take her four hours to manage this. Barack earns $80 per hour as an accountant. Michelle works as a dress designer for $40 per hour. Who has an absolute advantage for this task? Keeping in mind that either will have to take off time from work to manage taking the child to the dentist, who has a comparative advantage for this task? According to an economist, who should accompany the child to the dentist