Question
The average number of erasers Andy and Ian had was 106. The average number of erasers Andy and Japheth was 67.5. Given that the ratio of the number of erasers Ian had to the number of erasers Japheth had was 9 : 2, find the number of erasers Andy had.
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The average number of erasers Andy and Ian had was 106. The average number of erasers Andy and Japheth was 67.5. Given that the ratio of the number of erasers Ian had to the number of erasers Japheth had was 9 : 2, find the number of erasers Andy had.