Answer :
m=20+d
m-50=2(d-50), m-50=2d-100, m=2d-50, since m=m we have:
20+d=2d-50
-d=-70, d=70 and since m=20+d, m=90
So the present ages of the mother and daughter are 90 and 70 years old.
m-50=2(d-50), m-50=2d-100, m=2d-50, since m=m we have:
20+d=2d-50
-d=-70, d=70 and since m=20+d, m=90
So the present ages of the mother and daughter are 90 and 70 years old.