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1. What are the average marks obtained by all the seven students in Physics? (rounded off to two digit after decimal)





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  • By: guest on 01 Jun 2017 11.13 pm
    Average marks obtained in Physics by all the seven students   = 1 x [ (90% of 120) + (80% of 120) + (70% of 120) 7               + (80% of 120) + (85% of 120) + (65% of 120) + (50% of 120) ] = 1 x [ (90 + 80 + 70 + 80 + 85 + 65 + 50)% of 120 ] 7 = 1 x [ 520% of 120 ] 7 = 624 7 = 89.14.
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