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Math Help - Formula to get to the number

  1. #1
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    Formula to get to the number

    Hello,

    I will appreciate some help on identifying the proper formula to handle a case such as the following:

    - Let say we have a value (of 2000) and I will like to obtain the number to which when it is applied a 7% increase, it will sum 2000. Which is the formula to do this? Which is the mathematical name of this type of scenario?

    Thanks,
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  2. #2
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    Re: Formula to get to the number

    1.07 \times x = 2000\implies x = \frac{2000}{1.07}
    Thanks from orlandold
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  3. #3
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    Re: Formula to get to the number

    Thanks pickslides.

    Just to learn a bit more on this. Remind me which is the mathematical name given to the formula you presented to me. I will like to look for more examples and math logic of this.

    Regards,
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  4. #4
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    Re: Formula to get to the number

    Quote Originally Posted by orlandold View Post
    Thanks pickslides.
    Just to learn a bit more on this. Remind me which is the mathematical name given to the formula you presented to me. I will like to look for more examples and math logic of this.
    Not a formula as such; just a multiplication/division thing.
    Same as: what must 5 be multiplied by to give 30?
    5 * m = 30
    m = 30/5 = 6
    What must 1.07 be multiplied by to give 2000?
    1.07 * m = 2000
    m = 2000/1.07 = 1869.15887....

    If you're a "formula nut!", then:
    A = original Amount (?)
    D = Desired result (2000)
    R = Rate (.07)

    A = D / (1 + R)

    or, if you prefer, make R the percentage (7%); then R = 7 and:
    A = D / ( 1 + R/100)
    Thanks from orlandold
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