state gov WBPSC Miscellaneous Services Mock Test 2023 Quantitative Aptitude Average

The average height of a class of 50 students is 170 cm. What will be the average height (in cm, rounded off to the nearest integer) of the rest of the students if the average height of 15 of the students is 180 cm?  

1
162
2
166
3
175
4
174
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