The present ages of Ramesh and his elder brother are the ratio 5:7.after 4 years the ratio their age will be 3:4.Find their present ages.
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Let the age of Ramesh and his brother be 5x and 7x
respectively
After 4 years
age of Ramesh = 5x + 4
age of brother = 7x + 4
5x+ 4/7x+4= 3/4
4×(5x+4)=3(7x+4)
20x+16=21x+12
21x-20x=20-16
x=4
Age of Ramesh =20 years
Age of brother = 28 years
respectively
After 4 years
age of Ramesh = 5x + 4
age of brother = 7x + 4
5x+ 4/7x+4= 3/4
4×(5x+4)=3(7x+4)
20x+16=21x+12
21x-20x=20-16
x=4
Age of Ramesh =20 years
Age of brother = 28 years
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