The average age of 30 students of a class is 15 years. Average age remains unaltered even if 3 new students are admitted. The total age of 3 new students is what?
Md Ariful Islam
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এমবিএ(মার্কেটিং)
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Dr. Md Rushad Rahman
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পিজিটি(মেডিসিন)
If the new students don't change the average age of the class, that means their average age is 15, too, which means their total age is 3 x 15 = 45 years.
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