Tuesday, July 23, 2013

Maths

4 comments:

  1. TUESDAY:
    For this term, we started off continuing on doing finance.
    PROFIT: is the difference between selling price and cost price.
    Selling price = cost price + Profit
    However if the selling price is less than the cost price, then the seller has mad a loss.
    We can express profit as percentage.
    eg. Bill purchases a tv for $300 and sells it fo $380.WHat is his porofit as a percentage of his cost price.
    cp = $300
    sp= $380
    Profit = $80
    % profit = 80/300 times 100
    = 26.67%

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  2. GST:
    Goods and services tax = 10%

    Mars bar = $2.20 (inc gst)
    100% + 10% = 110%
    $2.20 = 110%
    divide by100
    0.02 = 1%
    times 100
    $2.00 = 100%

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