Using some mathematical modeling, I calculated the number of primary schools we would need to ensure every single person was at most 30 minutes drive from a school. That figure was way less than you might think.

However, it didn’t state what type of school it would be. We’ll need to give you some extra information. If we decided that any religion with more than 2,000 people was allowed to have a school of their own patronage (yes, that isn’t fair for faiths with fewer) within 30 minutes of where they lived, how many schools do you think we would need?