Which quantity?

	At the beginning of an edition of the 24 hours race of Le Mans, there are seventy-two 125 cm ³motor bikes and eighteen 250 cm ³motor bikes. The motorcyclists of 125 cm ³morbikes are the only ones allowed to put an advert on their helmet. Among them only 40 do it. How many motor bikes are there at the beginning?	motorbikes
	Nicolas wants to offer a bunch of flowers to his wife for her birthday. He chooses various flowers : 2 different types of tulips (two blue 0.50 €each and two red 0.20 €), 3 red roses 1.30 €each and 3 white lilies 1.50 €each. How many flowers does he buy?	flowers