Question 608366
The age of a woman and her daughter add up to 39years
w + d = 39
:
in 3years time the woman will be 4times as old as her daughter
w + 3 = 4(d + 3)
w + 3 = 4d + 12
w = 4d + 12 - 3
w = 4d + 9
:
In the first equation, replace w with (4d+9)
4d + 9 + d = 39
4d + d = 39 - 9
You should be able to take it from here




.find the ages of the woman and her daughter.