the sum of the present ages of the father and son is 70 years. after 10 years if their ratio is 2:1 what will be the present age of the son
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Answer:
the present age of son will be 20
Explanation:
after 10 years the sum of their ages = sum of present age +sum of their age 10 years after = 70+20 =90
let the ratios be 2x and x
2x+x =90
3x=90
x=90÷3
=30
age of son 10 years back =30-10=20
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