Ques:- There is a leak in the bottom of a cistern. When the cisternis thoroughly repaired, it would be filled in 3 ? hours. It now takes half an hour longer. If the cistern is full, howlong will the leak take to empty the cistern?
A. 24 hours
B. 28 hours
C. 21 hours
D. 27 hours
E. None of these
Recent Answer : Added by DK BOSS On 2021-07-17 06:18:17:
Time taken to fill repaired cistern = 12 mins
In 1 min, pipe will fill = 1/12
Time taken to fill cistern with leak = 12 + 18 = 30 mins
In 1 min, it will fill = 1/30
Consider the leak as an outlet pipe, so
1/30 = 1/12 – [ in 1 min how much the outlet pipe leaks ]
= 1/12 – 1/30
= 5/60 – 2/60 = 3/60 = 1/20
Therefore, it will take 20 mins for the leak to empty the cistern
Ques:- 45% of 1500 + 35% of 1700 = ?% of 3175
A. 40
B. 55
C. 45
D. 35
E. None of these
Recent Answer : Added by Admin On 2020-05-17 12:03:34:
the answer is (a)40
Ques:- Why a select t his filed…………………………….,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,
Ques:- if 1 is indicated by $ and 0 indicated by * find the value of {[LCM of 2,3,5]+6}1/2 ?
Recent Answer : Added by Admin On 2020-05-17 12:03:21:
First we need to find out LCM of 2,3,5
that is 30,,,
then add 30 to 6 we get 36…
then divide it by 2 we get 18..
so 18 would be written interms of binay as 10010
means..Answer is
$**$*
Ques:- Who is favourite cricket player and y???
Ques:- How many cubes of edge 2 dm can be cut out of a meter cube?
Recent Answer : Added by SHRADDHA NANDKISHOR BANGARE On 2020-07-29 09:55:49:
8 cubes
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Ques:- one rectangular plate with length 8inches,breadth 11 inches and 2 inches thickness is there.what is the length of the circular rod with diameter 8 inches and equal to volume of rectangular plate?
Recent Answer : Added by Admin On 2020-05-17 12:00:39:
volume of cylinder=volume of plane
pi*r*R*H=L*B*H
16PI*H=176
SO h= length=176/16*pi
ANser is 44pi
Ques:- Diophantus passed one sixth of his life in childhood, one twelfth in youth, and one seventh more as a bachelor; five years after his marriage a son was born who died four years before his father at half his final age. How old is Diophantus?
Ques:- If x and y are the two digits f the number 653xy such that this number is divisible by 80, then x+y is equal to?
Recent Answer : Added by BISHWAS KUMAR On 2022-01-16 17:18:15:
The last number should be 0.
and the rest of the number to be divisible by 8. The x should be 6
So, sum is 6.
Ques:- Mohan is thirteenth from the left end in a row of children.Prabir is twelfth from the right end and eighteenth from the left end. How many children are towards the right of Mohan in that row?
A. 12
B. 18
C. 17
D. Cannot be determined
E. None of these
Recent Answer : Added by satyaSamareddy On 2023-05-08 10:21:52:
12
Ques:- A man is 24 years older than his son. In two years, his age will be twice the age of his son. The present age of the son is:
Recent Answer : Added by Admin On 2022-09-28 18:02:37:
Let the age of the man be x
Then age of his son becomes (x−24)
2 years later from now,
Age of man will be = x+2
and age of his son will be =(x−24+2)=x−22
According to question,
2(x−22)=x+2
i.e., 2x−44=x+2
i.e., x=46
Therefore ,
Present age of man=46 years
And present age of his son =46−24=22 years
Ques:- What was your last profile and elaborate it?
Recent Answer : Added by senorina On 2021-10-22 09:13:08:
accountant trainee at thenational board of accountants and auditors
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Ques:- Which one of the following is a prime number?
A. 143
B. 221
C. 343
D. 823
Ques:- My mother’s sister’s son’s father’s mother-in-law is related to me as
Recent Answer : Added by Nisha On 2021-03-24 18:26:14:
maternal grand mother
Ques:- In the middle of a round pool lies a beautiful water-lily. The water-lily doubles in size every day. After exactly 20 days the complete pool will be covered by the lily. After how many days will half of the pool be covered by the water-lily?
Recent Answer : Added by HEMANTH MOKKAPATI On 2022-03-09 16:33:21:
the pool will be half full at the 19th day .so that it doubles on the 20th day and becomes full
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Ques:- IN A ROOM THERE IS ONE BULB OUTSIDE F THE ROOM THERE ARE THREE SWITCHES ONLY ONE SWITCH IS CONNECTED THE BULB.YOU ARE ALLOWED TO STAND NEAR THE SWITCH FOR 5 MINUTES WHAT EVER YOU DO THE SWITCH.AFTER 5 MINUTES ENTER THE ROOM AND TO SAY WHICH IS THE CORRECT SWITCH FOR THE BULB
Time taken to fill repaired cistern = 12 mins
In 1 min, pipe will fill = 1/12
Time taken to fill cistern with leak = 12 + 18 = 30 mins
In 1 min, it will fill = 1/30
Consider the leak as an outlet pipe, so
1/30 = 1/12 – [ in 1 min how much the outlet pipe leaks ]
= 1/12 – 1/30
= 5/60 – 2/60 = 3/60 = 1/20
Therefore, it will take 20 mins for the leak to empty the cistern