the average of ten numbers is 66.three of the numbers are 58,67 and 80. find the average of the other seven numbers.
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total of 10 no. = 66x10= 660
sum of three given no. = 58+67+80 = 205
so the sum of other seven no. = 660-205 = 455
avg. = 455/7 = 65
sum of three given no. = 58+67+80 = 205
so the sum of other seven no. = 660-205 = 455
avg. = 455/7 = 65
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