Question

Mohan family consist 5 people and their average age is 36 years. The average age of Sohan's family is 45 years. If the average age of both the families taken together is 40 years,then how many people are there in Sohan's family?​

Answer 1

Answer:

4

Step-by-step explanation:

mohan family members = 5

mohan family average age = 36

mohan family total age = 36 x 5 = 180

sohan family members = y

Sohan family average age = 45

Sohan family total age = 45xy

both families average age = 40

45xy + 180 = 40

5 + y

45y + 180 = 40(5 + y)

45y + 180 = 200 + 40y

45y - 40y = 200 - 180

5y = 20

y = 20/5 = 4