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30 പേരുടെ ശരാശരി ഭാരം 60 kg ആണ്. കൂട്ടത്തിൽ നിന്ന് ഒരാളെ മാറ്റിയപ്പോൾ ശരാശരി ഭാരം 60.5 kg ആയി. എങ്കിൽ മാറിയ ആളുടെ ഭാരം എത്രയാണ് ?

A50

B45.6

C45.5

D45.6

Answer:

C. 45.5

Read Explanation:

30 പേരുടെ ആകെ ഭാരം=30×60=1800 29 പേരുടെ ആകെ ഭാരം =29×60.5=1754.5 മാറിയ ആളുടെ ഭാരം =45.5


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