Asked by tori
Anita has two sisters and three brothers. The mean of all their ages is 6 years. Wht is the mean of their agesin 10 years and 20 years?
Answers
Answered by
PsyDAG
mean =∑x/n
6 = ∑x/6
∑x = 36
In 10 years ∑x = 36 + 6(10)
In 20 years ∑x = 36 + 6(20)
I'll let you do the calculations.
6 = ∑x/6
∑x = 36
In 10 years ∑x = 36 + 6(10)
In 20 years ∑x = 36 + 6(20)
I'll let you do the calculations.