"Murderous Maths" has been given a gorgeous new cover look. For readers floundering with their formulas, the next in the unchallenged "Murderous Maths" series, the Perfect sausage, reveals how to make the perfect fried egg, get your fair share of the gangster's leftover pizza and what makes money really interesting. Can the Mathsmobile take the pace? Using a host of hilarious characters, Kjartan Poskitt presents all the tricks, tips and shortcuts to maths they don't teach at school.