From Monday to Friday, Elle practices piano for 30 minutes. On Saturday, she practices piano three times as much as on a weekday. There is no practice on Sunday. How many hours does Elle spend practicing piano each week? Let's think first. Chain of thought:
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From Monday to Friday, Elle practices 0.50 x 5 = 2.5 hours. On Saturday, she practices 0.50 x 3 = 1.5 hours. Each week, Elle practices piano for 2.5 + 1.5 = 4 hours.
Therefore, the answer is 4.
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