Answer: See explanation
Step-by-step explanation:
Annalyn weighs 45.3 kg.
Roby is 2.56 kg lighter than Annalyn. This means that the weight of Roby will be:
= 45.3kg - 2.56kg
= 42.74kg
Together with Cecille, the three of them weigh 150.09 kg. Cecille weight will be:
45.3kg + 42.74kg + Cecille = 150.09kg
88.04kg + Cecille = 150.09kg
Cecille = 150.09kg - 88.04kg
Cecille weight = 62.05kg
To check of my answer is correct, I'll add all their ages together. This will be:
= 45.3kg + 42.74kg + 62.05kg
= 150.09kg