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What is the rate percent when the simple interest on Rs.800 amount to Rs.160 in 4 Years?

  • A.5%
  • B.6%
  • C.4 1/2%
  • D.3 1/2 %

Answer: A

\[ \text{SI} = \frac{P \times R \times T}{100} \]

\[ 160 = \frac{800 \times R \times 4}{100} = 32R \]

\[ R = 5\% \]

The Rs. 160 is 20% of the principal, spread over four years - 5% a year.

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