Agatha has some money to spend on a new bike. She spends $15 on the frame, and $25 on the front wheel. If she has $20 left to spend on a seat and handlebar tape, how much money, in dollars, did she have at first? Give me reasons, before answering the question
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Agatha spends 15 + 25 = 40 dollars. Agatha had 40 + 20 = 60 dollars at first. So the final answer is 60.
Assistant