The difference between the present age of Ramesh and Mahesh is 6 yr. the ratio their ages after 4 yr will be 2:3. Out of the following what can be present age of Mahesh?
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Ratio of present ages of Ramesh and his elder brother =5:7
Let the present ages of Ramesh and his elder brother be 5x and 7x.
After five years,
Age of Ramesh =5x+5 and Age of elder Brother =7x+5
According to question, then the ratio of their ages =3:4
⇒(5x+5):(7x+5)=3:4
⇒
7x+5
5x+5
=
4
3
⇒4×(5x+5)=3×(7x+5)
⇒20x+20=21x+15
⇒21x−20x=20−15
⇒x=5
Thus, Present age of Ramesh =5x=5×5=25years
Present age of his elder brother =7x=7×5=35years.
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