R borrowed Rs. 1,200 at 13% per annum simple interest. What amount will R pay to clear the debt after 5 years?
S.I = $$\frac{P\times\ T\times\ R}{100}$$
$$\frac{1200\times\ 5\times\ 13}{100}=780$$
So, after 5 years R have to pay = 1200 + 780 = Rs 1980.
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