L’air est constitué principalement d’azote et d’oxygène. Dans un volume d’air donné, le volume d’azote correspond à 78,6% du volume total et celui d’oxygène a 20,9%. Sachant qu’une salle de classe a un volume de 125m3, calculer le volume, en m3, de chacun des gaz présents dans cette salle.

Samson is going shopping for sugar and butter to make three different kinds of cookies: lemon bars, peanut butter cookies, and sugar cookies. the recipe for lemon bars calls for 2 cups of flour, 2 cups of sugar, and 1 stick of butter. the peanut butter cookie recipe calls for 2 cups of flour, 4 cup of sugar and 2 stick of butter. the sugar cookie recipe calls for 1 cup of flour, 2 cups of sugar, and 2 sticks of butter. sampson has 13 cups of flour at home, and he buys 12 cups (6 pounds) of sugar and 10 sticks of butter. how many batches of each type of cookie can he make? samson can make batches of lemon bars, batches of peanut butter cookies, and batches of 09 cookies submit reset