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A sum amounts to Rs. 5600 in 4 years and...

A sum amounts to Rs. 5600 in 4 years and Rs. 6400 in 6 years at a certain rate of simple interest. Find the rate of interest per annum and the sum.

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The correct Answer is:
the required sum is Rs 4000 and the rate of interest is 10% per annum.
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PEARSON IIT JEE FOUNDATION-SIMPLE INTEREST AND COMPOUND INTEREST -EXAMPLE 9.8
  1. A sum amounts to Rs. 5600 in 4 years and Rs. 6400 in 6 years at a cert...

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