The long-running series in which readers answer other readers’ questions on subjects ranging from trivial flights of fancy to profound scientific and philosophical concepts
Why do so many tinned foods – in Britain, at least – come in a cylindrical 400g can? Who decided that 400g is the perfect amount of beans/tomatoes/custard? Nanci Preston, Solihull
Post your answers (and new questions) below or send them to nq@theguardian.com. A selection will be published next Sunday. Continue reading...
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