5 Hugo, Tom et Safwan collectionnent les cartes de hockey. Hugo a 9 cartes de plus que le double des cartes de Tom. Safwan a 13 cartes de moins que le quadruple des cartes
de Tom.
Si Hugo et Safwan ont le même nombre de cartes, combien en ont-ils chacun ?

Which question is not a good survey question? a.don't you agree that the financial crisis is essentially over? 63on average, how many hours do you sleep per day? c. what is your opinion of educational funding this year? d.are you happy with the availability of electronic products in your state?