Question

A is 5 years older than b, b is 10 years older than

c. if the total ages of a, b and c are 40. then how old is b?

Answer 1

a= 5+b
b=10+c
so a=15+c

a+b+c=40
15+c+10+c+c=40
3c=15
c=5

so b= 15 years

Answer 2

b is may be 15 years old