A sum of money lent at simple interest amounts to Rs. 880 in 2 years and to Rs. 920 in 3 years. What is the sum of money?
Interest of 1 year = 920-880=Rs.40
Since, Principal = Amount - Interest
=> Principal (before 2 years) = $$880-40\times2=Rs.$$ $$800$$
=> Ans - (D)
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