Question
The ratio of age of βBβ after 5 years from now and
age of βCβ 4 years ago from now is 7:4, respectively. The present age of βCβ is 30% of the present age of βAβ. If present age of βAβ is 60 years then find the present age of βBβ.Solution
Present age of βCβ = 0.3 Γ 60 = 18 years 4 years ago from now, age of βCβ = 18 β 4 = 14 years 5 years hence from now, age of βBβ = 14 Γ (7/4) = 24.5 years Present age of βBβ = 24.5 β 5 = 19.5 years
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