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The mean weight of 70 students in a class is 60 kg.The mean weight of the girls in the class is 53 kg and that of the boys is 70.5 kg.Find the number of girls in the class.
This question has multiple parts. Therefore each part has been answered as a separate question on Clay6.com
isc
class12
modelpaper
2009
sec-a
q1
q1-8
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Apr 12, 2013
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