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  1. avatar says

    I’m stuck on example 6 chapter 7. Selling price £100 p.u demand 20,000 per annum. For every £2 change in selling price demand will change by 2000 units. On looking at the answer P=120-0.001Q I get where the 0.001 comes from but where do you get the 120 from?

    Thanks
    Vikki

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