6. A certain sum amounts to R 3,825 in 4 Vand to4,050 in 6 years. Find – InterviewSolution

1.	6. A certain sum amounts to R 3,825 in 4 Vand to4,050 in 6 years. Find the rate percent
Answer» Simple interest for 2 years = Rs. 4050 - Rs. 3825 = Rs. 225And simple interest for 4 years = Rs. 2252 = 450 Rs.So, Principal = Rs. 3825 - Rs.450 = Rs. 3375Now,Simple interest = (PRT)/100450 = (3375R*4)/10013500R = 45000R = 45000/13500Rate of interest = 10/3 %Therefore, Rate of interest is 10/3 % and Principal is Rs. 3375

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