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Question

Catherine and Daniella had the same number of hair clips at first. Catherine bought another 120 hair clips. She then had thrice as many hair clips as Daniella. How many hair clips did Catherine have at first?

Answer

After Catherine bought another 120 hair clips, she had 3 times as many hair clips as Daneilla.

If Catherine and Daniella each has 1 unit of hair clips at first, then Catherine had 3 units of hair clips after she bought 120 hair clips.

2 unit —> 120 hair clips

1 unit —> 60 hair clips

Catherine had 60 hair clips at first.

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