Question
Erika had half the amount of erasers Mark had. Mark had 3 times the amount of erasers as Henry. There were a total of 99 erasers. How many more erasers did Erika have than Henry?
4 m

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Erika had half the amount of erasers Mark had. Mark had 3 times the amount of erasers as Henry. There were a total of 99 erasers. How many more erasers did Erika have than Henry?