A unicorn has 5 doughnuts and a magic scale that can weigh any two doughnuts at a time (the scale will show the total weight of any two doughnuts). It takes 5 weigh-ins to determine the weight of each doughnut using a regular scale. How many weigh-ins on a magic scale will it take to determine the weight of each doughnut? How many for the total weight of the five doughnuts? NEED ANSWER ASAP PLS
