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The average height of 21 girls was recorded as 148 cm. If the teacher's height was added, the average increased by one. What was the teacher's height ?

A) 156 cm
B) 168 cm
C) 170 cm
D) 162 cm
E) None of these

Correct Answer:



C) 170 cm

Description for Correct answer:
Total height of 21 girls = 21 X 148

= 3108 cm

If teacher's height is added, then the average is increased by 1 cm.

Total height of all girls = 22 X 149

= 3278 cm

Teacher's height = 3278 - 3108

= 170 cm

Part of solved IBPS PO-Prelims1 questions and answers : Exams >> Bank Exams >> IBPS PO-Prelims1

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