Question
Joelle has thrice as many erasers as Kimberly. After Kimberly has bought another 80 erasers, Kimberly has twice as many erasers as Joelle. How many erasers does Kimberly have at first?
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Joelle has thrice as many erasers as Kimberly. After Kimberly has bought another 80 erasers, Kimberly has twice as many erasers as Joelle. How many erasers does Kimberly have at first?