SSC CGL 6 06 2019 Shift 2 Paper

Question : 62 of 100

Marks: +1, -0

Pipes A and B can fill a tank in one hour and two hours respectively while pipe C can empty the filled up tank in one hour and fifteen minutes. A and C are turned on together at 9 a.m. After 2 hours, only A is closed and B is turned on. When will the tank be emptied?

12 : 10 p.m.
11 : 30 a.m.
10 : 30 a.m.
12 : 20 p.m

Validate

Solution:

9 a m, A

and

C

are open

=10-8=2

In 2 hour

=4

A is closed and

\ {B}

is on

=5-8=-3

=3

unit out
time

\⇒\ {4}/{3}=1 \ {1}/{3}=1 \ {\h} 20 \ {\min}

so in next

1 \ {\h}\ 20 \ {\min},

tank is empty total

h=2+1 \h\ 20 \ {\min}

=3 \ {\h}\ 20 \ {\min}

9 \am+3 \h 20\min=12.20 \pm

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