The average of n numbers is 60. If each of 55% of the numbers is increased by 12 and each of the remaining numbers is decreased by 12, then the new average of the numbers will be
Avg. = 60 + ((55 x 12 - 45 x 12)/100) = 60 + 1.2 = 61.2
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Which of the following is a video format?
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