Final answer:
A person weighing 55.80 kg is very slightly heavier than a person weighing 123 pounds because 123 pounds converts to 55.79 kg, showing a small difference in weight.
Step-by-step explanation:
The weight of a person weighing 55.80 kg can be compared to a person weighing 123 pounds to determine who is heavier. First, we need to convert the weight from pounds to kilograms since 1 pound is equivalent to 0.4536 kg.
So, 123 pounds × 0.4536 kg/pound = 55.79 kg (rounded to two decimal places). When comparing, we can see that 55.80 kg is just slightly heavier than 55.79 kg. Therefore, a person weighing 55.80 kg is heavier than a person weighing 123 pounds by a very small margin.
To compare the weight of a person weighing 55.80 kg and a person weighing 123 pounds, we need to convert the weight to the same unit. 1 pound is equal to approximately 0.4536 kg, so the person weighing 123 pounds is approximately 123 x 0.4536 = 55.8 kg. Therefore, the two persons weigh about the same.