Kamala borrowed from bank = ₹ 26400
Rah of interest (R) =15%
n = 2 years

After 4 months the amount will be ₹ 34914
∴ P = 34914; R = 15%;
T = 4 months T
= 4/12 year
= 1/3 year
∴ I = PTR/100 = \(\frac{3414\,\times\,15\,\times\,\frac13}{100}\) = ₹1745.7
∴ Kamala has to pay the amount after 2 years and 4 months to the bank
= 34914 + 1745.7
= ₹36659.7