The average of 16 numbers is 35. It was found later that four numbers 18, 17, 24 and 35 were taken by mistake. What is the new average after removing these numbers ?

38.83

Total Sum of Numbers = 16 x 35 = 560

Sum of Numbers taken by mistake = 18 + 17 + 24 + 35 = 94

Sum of remaining Numbers = 466

 Avg. of remaining numbers = 38.83