questionFromString.label: Railway RPF Constable

Average height of a class of 12 students is 180 cm. The average decreases to 179 cm when the height of the class teacher is also added. What is the height of the teacher?

1:
168 cm
2:
167 cm
3:
179.5 cm
4:
166 cm
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chapterName.label: Average

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Railway RPF Constable

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