3. In a certain code language, ?book is tough? is written as ?fu la mi?, ?tough can easy? is written as ?fu muk po? and ?easy not book? is written as ?ti po la?. What is the code for ?tough? in that code language?
6. In a certain code language, '+' represents 'x', '-' represents '+', 'x' represents '÷' and '÷' represents '-'. What is the answer to the following question? 550 x 22 - 24 + 3 = ?