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The average age of 14 girls and their teacher's age is 15 yr. If teacher's age is excluded then the average reduced by 1. What is the teacher's age?
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- 29 yr
- 35 yr
- 32 yr
- 30 yr
Correct Option: A
Sum of 14 girls and teacher age = 15 x 15 = 225
Without teacher's age sum of 14 girls age = 14 x 14 = 196
∴ Teacher's age = 225 -196 = 29 year
