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Mathmatics

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Find the amount of sales tax and the total cost.

Cost of item Tax Rate
$500 6%

How do i do this problem?

  • Mathmatics -

    Multiply: $500 * 0.06 = tax

    Add the tax to the cost of the item to find the total cost.

  • Mathmatics -

    tx= 30
    total cost = 530

    Thanks, How do i find the percent notation of a fraction?

    14 over 25

  • Mathmatics -

    Divide: 14 by 25.

    Then multiply by 100 because percent means the number out of 100.

    Or you can just move the decimal point two places to the right to get the percentage.

  • Mathmatics -

    56% thanks

    How do I solve for N?

    2/10 = n/15

  • Mathmatics -

    You could set this up as a proportion and cross multiply.

    2/10 = n/15
    2*15 = 10n
    30 = 10n
    3 = n

  • Mathmatics -

    SO the answear would be 2/10 = 30/15
    because 2*15= 30

  • Mathmatics -

    Bryan -- I showed you how to solve this problem.

    2/10 = n/15
    2*15 = 10n
    30 = 10n <<Divide both sides of the equation by 10.

    3 = n

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