Interested to Buy Any Domain ? << Click Here >> for more details...
There is a leak in the bottom of a cistern. When the cistern
is thoroughly repaired, it would be filled in 3 ? hours. It
now takes half an hour longer. If the cistern is full, how
long will the leak take to empty the cistern?
(a) 24 hours
(b) 28 hours
(c) 21 hours
(d) 27 hours
(e) None of these
- 7 Answers
- 28580 Views
- Bank Exams, I also Faced
- E-Mail Answers
Answers were Sorted based on User's Feedback
Answer / mohit
suppose the capacity of cistern is 30unit. when it id repaired
then takes 3 hrs.thus water coming in i hrs=10unit.
now leak tank takes 3 hrs and 1/2 hrs extra. that is, in
general think that the water filling in 1/2 hrs is equal to
the leakage of hole in 3.5 hrs.
leakage in 3.5 hrs is =10/2=5 unit
so 5 unit is leakad in =3.5 hrs
so 30unit(full capacity) is leaked in =3.5*30/5
=21 hrs
so it will take 21 hrs to empty the full cistern.
| Is This Answer Correct ? | 25 Yes | 16 No |
Answer / godwin justin
Let's assume the tank has 12 litres capacity. The pipe can fill in 3 hours therefore efficiency= 12/3=4. Now the leak caused the tank to be filled in 3 1/2 hrs.
Total capacity/efficiency of pipe-efficiency of leak=time taken
ie,12/4-x=7/2
X=(28-24)/7= 4/7 which is the efficiency of d leak.
So time take by the leak to empty the tank is:
12÷ 4/7 12*7/4= 7*3 = 21 hours
| Is This Answer Correct ? | 5 Yes | 4 No |
Answer / sagarkumar doltade
LCM of repaired tank and leak tank time=3*3.5=10.5 difference between efficiency is 1/2 then 10.5/1/2=21
| Is This Answer Correct ? | 2 Yes | 1 No |
Answer / vidhya
usual time 4(half an hour longer) -->x
ue to leak 3.5-->y
formula =x*y/x-y=>4*3.5/0.5=28 hours
| Is This Answer Correct ? | 2 Yes | 3 No |
Answer / pradeep
the amount of work done by the leak in one hour is
(2/7)-(1/4)=1/28....
Therefore the amount required to empty the whole tank is 28
hours
| Is This Answer Correct ? | 6 Yes | 9 No |
TELL ME A FIVE DIGIT NUMBER WHEN DIVIDED BY 2 TO 10 REMAINDER IS 1 AND WHEN DIVIDED BY 11 REMINDER IS 0. i.e.., FIVE DIGIT NUMBER DIVIDED BY 2 GIVES REMINDER OF 1, FIVE DIGIT NUMBER DIVDED BY 3 GIVES REMINDER OF 1 AND SO ON TILL 10, THEN THE SAME FIVE DIGIT NUMBER DIVIDED BY 11 GIVES A REMINDER OF ZERO.
You need to purchase a textbook for nursing school. The book cost $80.00, and the sales tax where you are purchasing the book is 8.25%. You have $100. How much change will you receive back?
A person was fined for exceeding the speed limit by 10 mph. Another person was also fined for exceeding same speed limit by twice the same. If the second person was travelling at a speed of 35 mph, find the speed
Prefix of (A+B)*C- (D-E)/(F+G)
If y/x = 1/3 and x + 2y = 10, then x is
A sheet of paper has statements numbered from 1 to 10. For all values of n from 1 to 10, statement n says: ‘Exactly n of the statements on this sheet are false.’ Which statements are true and which are false?
Which is the biggest perfect square amongst the following 15129, 12348, 23716, 20736
two trains are 2 kms apart. Speed of one train is 20m/s and the other train is running at 30 m/s. Lengths of the trains are 200 and 300m. In how much time do the trains cross each other?
How many triangles are there in the following figure?
2 Answers CAT, EA Electronic Arts, Oriental Bank Of Commerce,
please i need help on getting hevron nigeria aptitude test questions.
if the sum of five consecutive nos. 35? how many prime nos are there ?
A bus started from the bus stand at 8Am and after staying 30 minutes at a destination return back to the bus stand. The Destination is 27 miles from the bus stand . The Speed of the bus is !8mph . In the return journey the bus travels with 50% fast speed. At what time it is return to the bus stand
English 
