CAT Exam Model Paper 1 with solutions for free online practice

(c) P‌1 and P‌2 can fill the tank in

24

5

h [∵in 1 h these fill (

1

8

+

1

12

)part of tank]]
∴It takes

12

5

h in filling half the tank
For remaining half of the tanks P‌3 will open and this will take 6 h
∴Supervisor has gone out for (

12

5

+6) h
Now,

1

3

rd tank will be filled in

8

5

h
∴In remaining

34

5

h only

17

30

th part of tank will fill.
∴Emptied part of tank = 1−(

1

3

+

17

30

)=

1

10

which is 10% of tank.