the present ages of hari and harry are in ratio of 5:7. 4 years from now ratio of their ages will be 3:4. find the present ages
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let the present age of Hari be 5x
let the present age of Harry be 7x
after 4 years
Hari's age will be 5x+4
Harry's age will be 7x+4
According to the question
5x+4÷7x+4=3÷4
4(5x+4)=3(7x+4)
20x+16=21x+12
20x-21x=12-16
-1x=-4x
x=4÷1
x=4
hari's age after 4 years=5x=5×4=20
harry's age after 4 years=7x=7×4=28
let the present age of Harry be 7x
after 4 years
Hari's age will be 5x+4
Harry's age will be 7x+4
According to the question
5x+4÷7x+4=3÷4
4(5x+4)=3(7x+4)
20x+16=21x+12
20x-21x=12-16
-1x=-4x
x=4÷1
x=4
hari's age after 4 years=5x=5×4=20
harry's age after 4 years=7x=7×4=28
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