The average age of 40 passengers in a ferry is 35. What is the average age of the new group formed when combining the passengers with the 5 crew members of ferry whose average age is 25?
Choose the correct choice from the following choices:
A) 36.45
B) 38.89
C) 39.67
D) 40.12
E) 41.88

Rationale: sum of ages of passengers = 40 x 35 = 1400 sum of ages of crew = 25 x 5 = 125 sum of ages of new group formed = 1525 average = 1525 / 45 = 38.89 answer : b
Answer: B