Question
Asha borrowed Rs. 4000 at R% S.I. and Rs. 6000 at (R +
2)% S.I. for 3 years. If the total interest was Rs. 1860, find the rate on Rs. 6000.Solution
4000 × R/100 × 3 + 6000 × (R + 2)/100 × 3 = 1860 120R + 180R + 180 × 2 = 1860 300R + 360 = 1860 300R = 1500 R = 5% So, R + 2 = 7%
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