Question

The average of a set of 30 numbers is 25. If three numbers 13, 15 and 20 are discarded, then the average of the remaining numbers is

• A. 12
• B. 18
• C. 24
• D. 26

Answer 1

Answer:

D. 26

The average of a set of 30 numbers is 25 Sum of 30 numbers = 30 × 25 =750 If three numbers 13, 15 and 20 are discarded The sum becomes = 750 - (13 + 15 + 20) = 750 - 48 = 702 new average = 702/27 = 26