The mean age of 5 boys is equal to 9.8. Furthermore, the mean age of 15 girls is 10.2. The mean age of the 20 children together is equal to?

Guest Sep 14, 2021

#1**+2 **

Mean is the average

b / 5 = 9.8 b = 49 years total

g/15 = 10.2 g = 153 years total

(49+153) / 20 = 10.1 mean

ElectricPavlov Sep 14, 2021