Q107 of 140 Page 196

Radhika borrowed Rs 12000 from her friends. Out of which Rs 4000 were borrowed at 18% and the remaining at 15% rate of interest per annum. What is the total interest after 3 years?

For first year interest, we have


⇒ p1 = 4000, R1 = 18% and T1 = 3year


⇒ I1 =


=


= 2160


For second year


⇒ P2 = 12000-4000 = 8000, R2 = 15% and T2 = 3year


⇒ I2 =


=


= 3600


Hence, after 3 year total interest = I1 + I2 = 2160 + 3600


= 5760


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