Rs. 25200 is invested in 3 parts in such a way that Simple Interest on 1^{st} Part at 4% per annum for 3 years, Simple Interest on 2^{nd} part at 6% per annum for 4 years and Simple Interest on 3^{rd} Part at 8% per annum for 5 years are equal. Find each part.

Let the Principal for 1st part be A Principal for 2nd part be B Principal for 3rd part be C According to the question, (A ×4 ×3)/100= (B ×6 ×4)/100= (C ×8×5)/100 12A = 24B = 40C (LCM of 12, 24 and 40) = 120 Ratio = 10 : 5 : 3 A = 14000, B = 7000 and C = 4200

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