Aleesia lost 1.5 pounds each week for 10 weeks. Alexei lost 2.5 pounds each week for 8 weeks. How many pounds did the two friends combine to lose? Let's think first. Chain of thought:
Alessia = 1.5 * 10 = 15 pounds. Alexei = 2.5 * 8 = 20 pounds. 15 + 20 = 35 pounds. Together they lost 35 pounds.
Therefore, the answer is 35.