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  • A certain sum, at compound interest, yields Rs. 1260 and Rs.1512 for the third and fourth years respectively. Find the sum .

A certain sum, at compound interest, yields Rs. 1260 and Rs.1512 for the third and fourth years respectively. Find the sum

  • Option 1)

    Rs.4500         

  • Option 2)

       Rs.4375      

  • Option 3)

      Rs.4800   

  • Option 4)

    Rs 4425

  • Option 5)

    Rs.4650     

Answers (1)

best_answer

R% = difference amount after n And (n+1) years /amount after n years x 100

1512 -\frac{1260}{1260}\times 100 = \frac{252}{1260} \times 100 = 20 %

Let us assume  P = 100 then

Total interest when P = 100 is 28.8

3rd year interest given = 1260

Then the common value multiplied = 1260 /28.8 = 43.75

So principal = 43.75 x 100 =4375

Posted by

rishi.raj

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