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If the interest on rupees is rupees for years, the rate of interest must be:

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answer is D.

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Detailed Solution

Concept: We are given the values of simple interest (

rupees ) , principal amount (

rupees) and the time period (

years ) . Direct put the given values in the simple interest formula,

. And solve accordingly.
Given that,
Simple interest,

rupees
Principal amount,

rupees
Time period,

years
Using Simple interest formula,

Therefore, Rate of interest

.
Hence, the correct answer is option (4) .

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