Average Ques 2

Question-

The average height of 16 students is $142 cm$. If the height of the teacher is included, the average height increases by $1 cm$. The height of the teacher is

(1) $156 cm$

(2) $159 cm$

(3) $158 cm$

(4) $157 cm$

(5) $159.5 cm$

(Corporation Bank Specialist Officer (Marketing) Exam. 22.02.2014)

Show Answer

Correct Answer: (2)

Solution: (2)

Tricky approach

Height of teacher $=(142+17) cm$

$=159 cm$