the median height of people in the IITH campus with a strength of 2500 is 168 cm. How many people are likely to be of height 169 cm and above?
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##ANSWER##
Total heights of students of class=20× 105cm
=2100 cm.
total heights of new group of students of class= 10× 120 cm= 1200 cm.
total students=20 + 10= 30.
total heights of students=2100 + 1200= 3,300 cm.
New average height of students=their total heights/total no.of students
= 3,300/ 30cm
= 110 cm.
hope this methodology helps you in your problem...
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