#138 Ice cream coincidence
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Mr Slippy owns two ice cream vans. His staff check the temperature of the freezers every hour to make sure nothing melts. One day, the freezer in Van A is at -13°C at 1pm and -18°C at 2pm. Meanwhile, Van B’s driver logs the temperatures as -12°C at 1pm and -20°C at 2pm.
Mr Slippy is certain that there must have been a time when both freezers were at exactly the same temperature but his drivers say it isn’t possible to know for sure. Who is right?
#137 Tricky treaty
Solution
James…
