please do 17 to 20 questions with explanation.
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here is the ans of que 17.
Solution of 20
the ages of Sonal and Manoj are in the ratio= 7:5
10 years later age ratio= 9:7
let the age of Manoj 10 year earlier= 5x
then Sonal age= 7x
now Manoj age = 5x+10
Sonal age= 7x+10
so equation through manoj age
=5x+10= 7x
x= 5
previous age of Sonal= 7x= 35
Manoj= 5x= 25
current age of Sonal= 7x+10= 45
Manoj= 5x+10=35
Solution of 20
the ages of Sonal and Manoj are in the ratio= 7:5
10 years later age ratio= 9:7
let the age of Manoj 10 year earlier= 5x
then Sonal age= 7x
now Manoj age = 5x+10
Sonal age= 7x+10
so equation through manoj age
=5x+10= 7x
x= 5
previous age of Sonal= 7x= 35
Manoj= 5x= 25
current age of Sonal= 7x+10= 45
Manoj= 5x+10=35
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