Francoise sells pots of lily of the valley to fund humanitarian work. She buys them at 12 each and sells them at a 25% higher cost. How much will she give back to the association by selling 150 pots of lily of the valley? Let's answer step by step:
The benefit of selling one pot is 12 * 25 / 100 = 3. So, Francoise will give 150 * 3 = 450 to the association. The answer: 450.