the rate of discount.

Discussion in 'CT1' started by verma.kunal13, Sep 9, 2012.

  1. verma.kunal13

    verma.kunal13 Member

    Hello friends.

    Could someone please help me out with one doubt. In chapter 5, question 5.13, page 18, while solving the discount payment... Why solution has taken the power as -24, why not only 24? Please help.

    Warm regards,
    Kunal Verma
     
  2. John Lee

    John Lee ActEd Tutor Staff Member

    Because we are given a rate of discount which we want to accumulate with.

    In the same way if you have 10% interest you multiply by 1.1^-5 if you want to discount for 5 years.
     
  3. verma.kunal13

    verma.kunal13 Member

    Still vague to me.

    Thank you Mr. Lee!

    My doubt is still unanswered. I was thinking for accumulating the formula should be used as C(1-d)^n. Why -n when we are already using the discount rate (d). Otherwise we accumulate the value using rate of interest C(1+i)^n. Pleaase explain where I am thinking wrong?

    Good day!
     
  4. John Lee

    John Lee ActEd Tutor Staff Member

    (1-d)^n = V^n which is discounting. We are asked to accumulate not discount. Hence the negative power.
     
  5. verma.kunal13

    verma.kunal13 Member

    Thanks

    thank you Mr. Lee!

    I got it now! Please help me with this convertibility thing. I guess I will go mad soon!

    Warm regards,
    Kunal Verma,
    verma.kunal13@gmail.com
     

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