The average age of 4 members of a family is 32 years. If the guest is included, then the average age increases by 12.5%. What is the age (in years) of guest?

The average age of 4 members of a family is 32 years. If the guest is

1.	The average age of 4 members of a family is 32 years. If the guest is included, then the average age increases by 12.5%. What is the age (in years) of guest?
A.	52
B.	56
C.	44
D.	12
Answer» B. 56