The average age of 30 students is 14 years. When the teacher's age is included, the average increases by 1 year. The teacher's age is:
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Correct answer: (D) 45 years
From DSSSB TGT Computer Science Full Mock Test 2
This is question 53 of DSSSB TGT Computer Science Full Mock Test 2. See all questions of this paper with answers, or attempt the paper as a timed online test to get your score and all-India rank.