SOLUTION: Three years ago the average age of nandu and panna was 18 years. With shuba joining them now their average age became 22 years. how old is shubha now

Question 725581: Three years ago the average age of nandu and panna was 18 years. With shuba joining them now their average age became 22 years. how old is shubha now
Answer by god2012(113) (Show Source): You can put this solution on YOUR website!
Let 'n' and 'p' are the present ages of nandu and panna respectively.
Let 's' be the present age of subha.
3 years ago,
n' = n - 3
p' = p - 3
(n' + p')/2 = 18
(n+P-6)/2 = 18
(n+p) = 42
Present average of 3 girsl = (n + p + s) /3 = 22
(42 + s)= 66
s = 22 years
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