Question

(a) 20
(b) 80
3. The average age of group of persons going for picnic is 16 years, 20 new person with an
average age of 15 years join the group on the spot, due to which their average becomes 15.5.
Find the number of persons initially going for picnic?
(a) 40
(b) 20
(c) 80
(d) 30​

Answer 1

Answer:

40people are going to the picnic