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    I'm stuck on the following question, 4c(i)

    I do not understand how to form the 2 equations to equal eachother to show what T equals.
    Here is the markscheme for reference:

    I understand why it makes them both equal together but I do not understand why it is T-10 on the p, I tried with T + 10 on the q but it didn't work, why is it this way? Thanks
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    (Original post by Sayless)
    I understand why it makes them both equal together but I do not understand why it is T-10 on the p, I tried with T + 10 on the q but it didn't work, why is it this way? Thanks
    The reason it doesn't work the other way round is because t=0 is the April 1st 2001, as specified in the question.
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    (Original post by joostan)
    The reason it doesn't work the other way round is because t=0 is the April 1st 2001, as specified in the question.
    In the second equation when t = 0, it is April 1st 1991, how do I know which one to put it in
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    (Original post by Sayless)
    In the second equation when t = 0, it is April 1st 1991, how do I know which one to put it in
    Sorry, I didn't make myself very clear, the formula for V uses t=0 in 2001, so you need to adjust the time value of the formula for V by 10, so if the time is T years after 1991, then it is T-10 years after 2001.
 
 
 
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