Question

Average of20 number is8.If two nimbers 12 and 10 are discarded;the average of remaining set of numbers will be?

Answer 1

Find the sum of the 20 numbers:

Average = 8

Sum = 8 x 20 = 160

Find the sum after discarding 12 and 10:

Sum = 160 - 12 - 10 = 138

Find the average of the remaining 18 cards:

Sum = 138

Average = 138 ÷ 18 =23/3

Answer: The average of the remaining set of numbers is 23/3