Pipes & Cistern Quiz For Upcoming Exams Solution | GovernmentAdda
Home / Pipes & Cistern Quiz For Upcoming Exams Solution

Pipes & Cistern Quiz For Upcoming Exams Solution

NIACL AO Complete Mock Test Package Get Now For Free
IB Security Assistant Complete Free Study Material PDF Free Download Now
SSC CGL,CPO,GD 2018 Study Material & Book Free PDF Free Download Now
IBPS Clerk 2018 Study Material & Book Free PDF Free Download Now

 

Print Friendly, PDF & Email

Answer :-

1. (b) (Total capacity)
60
Efficiency 3 2
Hour → 20 30
(A) (B)
filling pipe
According to questions,
Pipe ‘A’ is closed after some time.
And Tank is filled in 18 minutes so
B started filling in beginning and
Worked till last i.e. 18 minutes
So, 2×18 = 36 units is filled
Work left = 60 – 36 = 24 units
This 24 units must be filled by Pipe
A in beginning.
It can fill it in
= 8 minutes

2. (d)
Efficiency
Hours →
(filling) (emptying)
Total efficiency of both pipes is
Tank will be filled in

3. (c) Apply formula of
Let ‘P’ pumps are required to empty the
Reservoir.
P = 10 pumps

4. (a) Pipe A : Pipe A-leakage
Efficiency → 2 : 1
Time 1 : 2
×36 1 unit = 36 hrs
36 hrs

5. (d) let (A+B) fills 1 liter in 1 minutes
Then (A+B) fills in 36 minutes = 36 liters
According to question
(A+B) work only 30 minutes then pipe filled by
(A+B) in 30 minutes is = 30 liters
Remaining part = 6 liters
6 liters part filled by A in = 10 minutes
1 part filled by A =
minutes
36 part filled by A =
= 60 minutes
A + B = 36 minutes
A = 60 minutes
(T.W)
180
Efficiency 3 5 liters/minute
60 36
(A) (A+B)
A’s efficiency = 3 liters/minutes
B’s efficiency = 2 liters/minutes.
B can alone fill the tank in
=
= 90 minutes

6. (c) (Total capacity)
120
Efficiency → 6 5 8
Hours → 20 24 15
(A) (B) (A+B+C)
(A+B+C) one day work = 8
6+5–C = 8
11–C = 8
C = 3
C = 3 units T.C = 120
×1 ×1
Actual 3 Galons 120 units
emptying
capacity
= 120 galons

7. (d)
120
Efficiency → 30 15 10 –12
Hours → 4 8 12 10
(P) (Q) (R) (S)
In order to fill the cistern in less time.
So, efficiency of filling should be more
Now, check all options
(A) → Q efficiency 15 units/hr
(B) → (P + R – S) efficiency
= 30+10–12 = 28 units/hr
(C) → (P + S) efficiency = 30 – 12
= 18 units/hr
(D) → (P + Q – S) efficiency
= 30+15–12 = 33 units/hr
Option ‘D’ is answer.
Since efficiency of option ‘D’ is highest.

8. (d) (Total capacity)
30
Efficiency→ 3 2
Hours → 10 15
(–A) (–A+B)
Emptying Filling
Pipe A is emptying at 3 units/hr
When filling pipe ‘B’ start function
then emptying rate comes down to
2 units/hr
So, filling pipe efficiency is
(3–2) = 1 unit/hr
Pipe ‘B’ will fill tank in =
= 30 hrs
Filling rate is 4 liters/minutes
It will fill 4×60 = 240 liters/hr.
Total capacity = 240×30 = 7200 liters

9. (c) (Total capacity)
12
Efficiency→ 3 2
Hours → 4 6
(A) (B)
A will fill 3 units of water in Ist hour
B will fill 2 units of water in IInd hours
5 units in 2 hours
5 units is filled in 2 hours
×2 ×2
10 units 4 hours
Work left = 12–10 = 2 units
Now, A will begin he completes 2
Units in
hours
Total time = 4
hours

10. (c) Qty Time(in minutes)
Boy → 4 liters 3
Girl→ 3 liters 4
Boy → (4 3)×4 = 16 liters
In 12 minutes
Girl→ (3 4)×3 = 9 liters
In 12 minutes
(Boy + Girl) pour
25 liters 12 minutes
×4 ×4
100 liters 48 minutes

GovernmentAdda Recommends

OnlineTyari Mock Tests

IBPS Clerk Complete Free Mock Test Package Attempt Now For Free
IB Security Assistant Free Mock Test Attempt Now For Free
SSC CGL Complete Mock Test Package Attempt Now For Free
SSC CPO Complete Mock Test Package Attempt Now For Free

 

 

 Download English Power Book (2000+ Pages)  Free Download Now
Download Quant Power Bank (1000+ Pages)  Free Download Now
Reasoning & GI Booster -Power Bank Book (1200+ Pages)  Free Download Now

 

error: