Question

A certain sum at simple interest becomes Rs1200 in 2years and Rs1300 in 3years find the principle and interest percent per annum
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Answer 1

Answer:

Difference between SI & CI = 1290–1200= 90

SI for 2 year =1200 (given)

So SI is for 1 st year = 600

= 90/600 X 100= 15%

15% = 600

100%= 4000 (Ans)