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MGSM / Jennie is helping at her mom's office. She has a pile of 60 letters needing…

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question

Jennie is helping at her mom's office. She has a pile of 60 letters needing stamps, and a pile of letters already stamped. She puts stamps on one-third of the letters needing stamps. If there are now 30 letters in the pile of already-stamped letters, how many were in that pile when Jennie began?

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