The sum of the 1/2 of Karunanidhi's age two years from now and 1/3 of his age three years ago is twenty years, then how old is he now?
Karunanidhi's age two years in the future and three years in the past.
Assume Kaunanidhi's age now be K.
His age after two years from now is K + 2 and three years ago is K - 3.
1/2 of age two years from now is (1/2)(K + 2) = K/2 + 1
1/3 of age three years ago is (1/3)(K - 3) = K/3 - 1
The sum of these two numbers is twenty,
i.e.k/2 + 1 + K/3 - 1 = 20
K/2 + K/3 = 20
3K + 2K = 120
K = 120/5 = 24
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