Question

the age of hari and harry are in the ratio 5:7 . four yes from now the ratio of their age will be 3:4. find the present ages.​

Answer 1

Answer:Let present age of hari be 5x

then present age of harry be 7x

According to question

5x+4=3

7x+4=4

5x+4/7x+4=3/4

4(5x+4)=3(7x+4)

20x+16=21x+12

x=4

present age of hari=5x=5*4=20 years

present age of harry=7x=7*4=28 years.

Answer 2

Answer:

Answer:Let  hari 's current age be 5x

Let  harry's  current age be 7x

5x+4/7x+4=3/4

using cross multiplication

4(5x+4)=3(7x+4)

20x+16=21x+12

20x -21x =12-16

-x =-4

( -) will get canceled on both the sides so ,

x=4

so,

hari's current age =5x=20 years

harry ' current age =7x=28 years.