Five years ago the ratio of Kunal and Sanjay is 6 5 after four years ratio will be 11 10 what is San...........

Quantitative Aptitude (CDS) Problems based on Ages

Five years ago the ratio of Kunal and Sanjay is 6: 5.after four years ratio will be 11: 10.what is Sanjay age 4 years ago?

9 year

10 years

5 years

6 years

Let present age kunal is x and sanjay is y

6 years ago x-5 and y-5

X-5/y-5 =6/5

5x-25 =6y-30

5x-6y=-5 equation 1

After 4 years ratio will be 11: 10

X+4/y+4 =11/10

10x+40 =11y+44

10x-11y=4 equation 2

Solving equation 1 and 2

-y=-9

Y=9

X=104/10 years

Sanjay 4 years before=9-4=5

Submit Error