Question

1) The average age of a group of people going for picnic is 16 years. 20 new people with an average age of 15 years join the group on the spot due to which their average becomes 15.5, Find the no. of people initially in the group going for the picnic. options= 1) 20 , 2) 18, 3) 22, 4) None of these

Answer 1

1(20 is the answer of this questions