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In a dance class of 12 student, one of them who is 15 yr old leaves the class and a new student is admitted. This change increases the average age of the class by 3 months. Then, age of the new student is |
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Answer» In a dance class of 12 student, one of them who is 15 yr old leaves the class and a new student is admitted. This change increases the average age of the class by 3 months. Then, age of the new student is |
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