IMAT 2017 Question 3

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A manager will only read between 8am and 5.15pm. If she sends the email at 3pm London time then the only people reading it at the time she sent will be the managers in Prague, Stockholm and Nicosia (as these are all either 1 or 2 hours ahead of London time).

Now find the manager that will receive the email closest to this time but who will just have gone home. This is Moscow, Riyadh and Nairobi who will receive it at 6pm, but wont read it until 8am (14 hours later) the next day. The answer is thus 14 hours.
Hope it helps:)