SOLUTION: at present a mother is twice as old as his daughter.twenty years back their ages were in the ratio of 10:3 the present age of the mother is 33 years 66 Years 35 years 70 years

Algebra ->  Numeric Fractions Calculators, Lesson and Practice -> SOLUTION: at present a mother is twice as old as his daughter.twenty years back their ages were in the ratio of 10:3 the present age of the mother is 33 years 66 Years 35 years 70 years      Log On


   

Question 1133763: at present a mother is twice as old as his daughter.twenty years back their ages were in the ratio of 10:3 the present age of the mother is
33 years
66 Years
35 years
70 years
Answer by josgarithmetic(39617) About Me  (Show Source):
You can put this solution on YOUR website!
Present ages, x and 2x

Twenty years back, %282x-20%29%2F%28x-20%29=10%2F3
-

%28x-10%29%2F%28x-20%29=5%2F3
3%28x-10%29=5%28x-20%29
3x-30=5x-100
-30%2B100=2x
highlight%282x=70%29------------mother is 70.
x=35