SaraNextGen.Com

The average age of group of persons going for picnic is 16 years. Twenty new persons with average age of 15 years join the group on the spot due to which their average age becomes 15.5 years. The number of persons initially going for picnic is

(a) 5                                (b) 10                                   (c) 20                           (d) 30



Question ID - 50906 | SaraNextGen Top Answer

The average age of group of persons going for picnic is 16 years. Twenty new persons with average age of 15 years join the group on the spot due to which their average age becomes 15.5 years. The number of persons initially going for picnic is

(a) 5                                (b) 10                                   (c) 20                           (d) 30

1 Answer
127 votes
Answer Key / Explanation : (c) -

Let the initial number of persons be  Then,

127 votes


127