Question

7 The average age of 50 students in a bus is 20
years. When the
When the age of conductor is included,
the average age is increased by one year. The
age of the conductor is:
(a) 51
(b) 55
(c) 71
(d) 50
​

Answer 1

Answer:

71

Step-by-step explanation:

50 students average = 20 years

Assume each student = 20 years

Now due to condutor age average increased by 1.

which became as 21

50 students age changed to 21 years because of the age of conductor.

Conductor age = 51(21) - 50(20) = 71years.