w = 5 d
w + 4 = 3 (d + 4)
substituting ... 5 d + 4 = 3 d + 12
solve for d , then substitute back to find w
A woman is 5 times as old as her daughter. In 4 years time, she will be 3 times as old as her daughter. What is the present age of the woman in years?
1 answer