Question
The average age of Vimal and Kamali is 24 years, and the ratio of Kamali's age to Surya's age is 4:5. If the average age of Vimal, Kamali, and Surya is 21 years, and the ratio of the present ages of Vimal to Surya is the same as the ratio of Hari's age to Kalyan's age in 3 years, with the average present age of Hari and Kalyan being 22.5 years, what is Kalyan's current age?
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