The table below shows the value of the ftse 100 share index over 6 month periods for 2 years.  January 2017 - £7147 July 2017.       - £7455 January 2018 - £7692 July 2018        - £7668 January 2019 - £7154 If the value of shares held in the ftse 100 was £2450 in July 2017, what would it be in July 2018

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