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  • avatar image

    Need help! Adrian_1612

    Can anyone explain how the second line is gotten and if this is some rule i.e. Factorization?

    Any help appreciated!

    attachment Question 5 2015 Paper 1 Sample paper.docx

    1. avatar image


      This is a formula for interest. it is in the tables book. the formula is F=P(1+i)^t

      p=the starting amount

      i the rate of interest, converted from % to decimals. e.g 5%=0.05

      t= the amount of time.

      this question asks you to work backwards after giving you some information. fill the numbers into the formula. the first number in the bracket needs to be1 and so the question is dividing the bracket by 5088.50 to get it to equal to 1.

      Hope this helps!:)

    2. avatar image


      Thanks for that

      I understand the formula and the rest of it.

      What is getting me is the second line in the attached. The algebra side of it? Where did the 1 come from?

      Is it some form of factorising?


    3. avatar image

      Wiki B

      The one kind of mark that its the whole price plus the 5% ... I think

    4. avatar image

      Wiki B

      I think the one means that it is the whole number plus the 5%

    5. avatar image


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