Question

the average age of Raju rani rajini and ratna is 32 years .the average age of Raju and ratna is 30 years what is avarage age of rani and rajini
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Answer 1

Answer:

34

Step-by-step explanation:

let ages of raju be u, rajini j, Rani be n, ratna t

average of j,n,t,u =32

sum (j,n,t,u)= 4×32= 128

average of u,t =30

sum(t,u)=60

sum(j,n)=128-60=68

average of j,n = 68/2= 34