Question
The present age ratio of Anshul
to Pawan is 5:7, and that of Chinky to Diksha is 3:2. A decade ago, the ratio of Anshulβs age to Chinkyβs age was 3:4. Furthermore, after a decade, the age ratio of Pawan to Diksha will be 3:2. Calculate the average current age of Anshul, Pawan, and Chinky.Solution
ATQ, Let present age of Anshul and Pawan be β5xβ years and β7xβ years respectively. And, present age of Chinky and Diksha be β3yβ years and β2yβ years respectively. According to question, (5x β 10)/(3y β 10) = 3/4 20x β 40 = 9y β 30 20x β 9y = 10β¦β¦β¦β¦β¦β¦β¦β¦β¦. (1) (7x + 10)/(2y + 10) = 3/2 14x + 20 = 6y + 30 14x β 6y = 10 7x β 3y = 5β¦β¦β¦β¦β¦β¦β¦β¦β¦.. (2) Solving equation (1) and (2), we get x = 5 and y = 10 So, Desired Average = (5 Γ 5 + 7 Γ 5 + 3 Γ 10)/3 = 30 year
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