SSC CPO SI and ASI Model Paper 3

(4) Let the total quantity of mixturein vessel P = 1 litre
Quantity of ink in 1 litre mixturefrom vessel P =

4

5

litre
Quantity of water in 5 litre mixturefrom vessel P =

1

5

litre
Let the total quantity of mixture invessel Q = 1 litre
Quantity of ink in 1 litre mixturefrom vessel Q =

6

11

litre
Quantity of water in 1 litre mixturefrom vessel Q =

5

11

litre
Let x litre of mixture from vessel Pand y litre of mixture from vessel Qare added to make a new mixture invessel R
∴ According to the question,

4x 5 x

5

+

6y 11 5y

11

=

7

4

5⇒ 4(44x + 30y) = 7(11x + 25y)
⇒x : y = 5 : 9