Q. Roy deposited a sum of amount in a bank at a certain rate of interest for 2 years, had the rate of interest been 3% more it would’ve fetched him Rs 210 more. What was the amount deposited by him

2500

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3000

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3500

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4000

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None of these

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Solution

The correct option is C 3500
For principal amount x and original rate of interest R and 2nd rate of interest R+2
$\frac{x (R + 3)}{100} \times 2 - x \times \frac{R}{100} \times 2 = 210 2 x R + 6 x - 2 x R = 21000 x = 3500$

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Q. Roy deposited a sum of amount in a bank at a certain rate of interest for 2 years, had the rate of interest been 3% more it would’ve fetched him Rs 210 more. What was the amount deposited by him

The correct option is C 3500For principal amount x and original rate of interest R and 2nd rate of interest R+2 x(R+3)100×2−x×R100×2=2102xR+6x−2xR=21000x=3500

The correct option is C 3500
For principal amount x and original rate of interest R and 2nd rate of interest R+2
$\frac{x (R + 3)}{100} \times 2 - x \times \frac{R}{100} \times 2 = 210 2 x R + 6 x - 2 x R = 21000 x = 3500$