1.

Mr Narayan deep 6455 at the end of one year at the rate of 14% per annum in RD account find the monthly installment

Answer»

Step-by-step explanation:

Given Mr Narayan gets 6455 at the end of one year at the rate of 14% per annum in RD account. Find the monthly INSTALLMENT  

  • Let the principal P be m
  • Now principal for 12 months will be = n(n + 1) / 2 m
  •                                                                = 12 (12 + 1) / 2
  •                                                                 = 12 x 13 / 2
  •                                                                     = 78 m
  • Now  Interest = P [ n(n + 1) / 2 x 1/12 x R / 100]
  •                                78 m x 14 x 1 / 100 x 12  
  •                                       = 0.91 m
  • Now money deposited in 12 months will be 12 m
  • Also MATURITY value will be 12 m + 0.91 m
  •                                                = 12.91 m
  • Now according to the question  
  •                                              12.91 m = 6455
  •                                             Or m = 6455 / 12.91
  •                                                  Or m = RS 500

Therefore monthly installment will be Rs 500

Reference link will be

brainly.in/question/4363



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