Question
The present average age of βAβ and βBβ is 10
years, present average age of βAβ and βCβ is 6 years and present average age of βBβ and βCβ is 12 years. Find the present age of βAβSolution
According to the question, Present ages of (A + B) = 10 Γ 2 = 20β¦. (1) Than, the Present ages of (A + C) = 6 Γ 2 = 12β¦. (2) Than, the Present ages of (B + C) = 12 Γ 2 = 24β¦.. (3) Therefore From equations (1), (2) and (3), we get Present ages of (A + B + C) = (20 + 12 + 24)/2 = 28 years Therefore From equation (3)we will get the, present age of βAβ = 28 β 24 = 4 years
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