Question

The average of a family of seven members two years before was 19. The average is the same this year after a child was born. The child’s age is:

Answer 1

((a+b+c+d+e+f+g)/7) -2=19
a+b+c+d+e+f+g=147

(a+b+c+d+e+f+g+x)/8=19
x=5
here a,b,c,d,e,f,g are the ages of 7 family members and x is the age of child