10 years ago, the ratio of daughter and mother was 1:7. After 10 years, the ratio of the ages would be 1:2. Find the present age of daughter.
D= daught age now. 10 years ago. D-10. And mother was M-10= 7 (D-10)
NOW. M= 2D. Sub this into the fjest equation
2D - 10 = 7D-70
60=5D. D = 12.
Then M = 2D= 24. ( Mom was preggo @ 11 y/o ! )