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

18 yr

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20 yr

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17 yr

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16 yr

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Solution

The correct option is A
18 yr

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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

The correct option is A 18 yr

The correct option is A
18 yr