Radhika borrowed rs.3000 at some rate percent C.I. After 1 yr, she pays back in rs.1000. If C.I. for the second year be rs.230, find(a) the rate of interest charged(b) the amount of debt at the end of second year(c) the amount of debt at the end of third yr if she again pays rs.1000 at the end of the second year.

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