The average age of 30 students is 20 years. If the teacher’s age is added, the average becomes 21. What is the teacher’s age? - Study24x7
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SBI PO Exam
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The average age of 30 students is 20 years. If the teacher’s age is added, the average becomes 21. What is the teacher’s age?

A

50

B

60

C

51

D

55

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