The age of the son is 30 years less than the age of the mother if after 10 years the ratio of age of mother and son becomes 3: 1 then the present age of the mother becomes ..... years.
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Step-by-step explanation:
let the age of son be x
then the age of mother will be x+30
age of son after 10 years = x+ 10
age of mother after 10 years= x+30+10
A/q
x+30+10=3(x+ 10)
x+ 40= 3x+30
40-30=3x-x
10=2x
10/2=x
5=x
so present age of mother is x+30=5+30
=35
age of mother after ten years = 45
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