CDS Model Paper 5 Mathematics

Let the present ages of Vikas and Vishal be 15x years and 8x years.
After 10 years,
Vikas's age =15x+10 and
Vishal's age =8x+10
∴

15x+10

8x+10

=

5

3

⇒ 3(15x+10)=5(8x+10)
⇒ 45x+30=40x+50
⇒ 5x=20⇒x=

20

5

=4
∴ Present age of Vikas =15x=15×4=60 years
Present age of Vishal =8x=8×4=32 years.