The average mass of 3 boys is 58 kg. The average mass of 2 girls is 47 kg. Find the average mass of the 5 childrens.
To find the average mass of the 5 children, we will add up the total mass of all 5 children and then divide by 5.
Total mass of 3 boys = 3 boys x 58 kg = 174 kg
Total mass of 2 girls = 2 girls x 47 kg = 94 kg
Total mass of all 5 children = 174 kg + 94 kg = 268 kg
Average mass of the 5 children = 268 kg / 5 = 53.6 kg
Therefore, the average mass of the 5 children is 53.6 kg.