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    Sam_alex66's Avatar
    Sam_alex66 Posts: 1, Reputation: 1
    New Member

    Nov 22, 2017, 04:08 AM
    Simple maths that is making my head implode
    You have 1kg of unroasted green coffee beans at a cost of $7. When you roast this coffee you lose 20% of the original weight to produce only 800g of roasted coffee. How much is 1kg of roasted coffee? Please teach me this maths!
    teacherjenn4's Avatar
    teacherjenn4 Posts: 4,001, Reputation: 468
    Education Expert

    Nov 22, 2017, 09:04 AM
    What part of the problem is giving you trouble?
    Wondergirl's Avatar
    Wondergirl Posts: 37,914, Reputation: 5430
    Jobs & Parenting Expert

    Nov 22, 2017, 10:45 AM
    First, how many grams are in one kilogram?
    ma0641's Avatar
    ma0641 Posts: 15,681, Reputation: 1012
    Uber Member

    Nov 22, 2017, 11:41 AM
    You lost 20% by weight. What weight of green beans multiplied by X %(remainder) = 1Kg? You then can determine the additional cost to make 1Kg of roasted beans.

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