Question

the average age of a woman and her daughter is 46

Answer 1

According to question woman's age 92-x and her daughter's age x  

92-x/x = 15/8

15x = 8(92-x)

X = 32

So their present ages 32 and 60

Ratio of ages after 8 yrs  

60+8/32+8 = 68/40 = 17/10

Answer 2

the age of the daughter is 36 and the age of her mother would be 62

:)