Ques:- A large tanker can be filled by two pipes A and B in 60 and 40 minutes respectively. How many minutes will it take to fill the tanker from empty state if B is used for half the time and A and B fill it together for the other half?
Recent Answer : Added by Raja On 2022-11-15 16:37:18:
30mins
Let the total time taken to fill the tank be x minutes.
Then, work done by B in half hour + work done by (A+B) in half hour =1.
(
40
1
×
2
x
)+(
60
1
+
40
1
)×
2
x
=1
⇒
80
x
+
48
x
=1
⇒
240
3x+5x
=1
⇒8x=240
⇒x=30 min
Ques:- 'A' has a lock and its key. 'B' has a and its key. A needs to send a letter to B in a Box. How do they do it if they don't want to share their keys with each other?
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Ques:- The average age 9 members of a committee are the same as it was 2 years ago, because an old number has been replaced by a younger number. Find how much younger is the new member than the old number?
Ques:- If we change the word ‘ddosszm’ into ‘central’ then what will be the changed word for ‘rtjbl’ ?
Recent Answer : Added by Aziz Khan On 2022-05-17 09:08:39:
Quick
Ques:- How many seconds will a 500 m long train take to cross a man walking with a speed of 3 km/hr in the direction of the moving train if the speed of the train is 63 km/hr?
Recent Answer : Added by Bhoomi Patel On 2021-08-19 17:24:21:
speed of the train respect to man
= (63 – 3) km/hr
= 60 km/hr
= 60 * 1000 / 3600 m/sec
= 50/3 m/sec
time
= distance/speed
= 500 * 3/ 50
= 30 sec
Ques:- A garrison of 2000 men has provisions for 54 days. At the end of 15 days, a reinforcement arrives, and it is now found that the provisions will last only for 20 days more. What is the reinforcement?
Recent Answer : Added by swapnil On 2022-03-09 16:35:27:
1900
Ques:- Tell me about a time when you had to be very careful in communicating delicate information. What was the possible risk involved and how did you go about it?
Ques:- A person walks 4 km towards west, then turns to his right to travel 9 km. He turns towards east and travels 12 km. Finally, he travels 3 km towards south. How far is he from the initial position (in km) ?
Recent Answer : Added by Pratyusha On 2021-09-02 08:08:04:
Answer is 10km
Ques:- What is your role & responsibility in current company
Ques:- A certain street has 1000 buildings. A sign-maker is contracted to number the houses from 1 to 1000. How many zeroes will he need?
Recent Answer : Added by Admin On 2020-05-17 12:00:37:
192 Zeroes
Ques:- The first three terms of a proportion are 3, 9 and 12. The fourth term is?
Recent Answer : Added by Nikhil Shamrao Ghume On 2022-01-08 16:06:47:
24
Ques:- A+B+C+D=D+E+F+G=G+H+I=17 where each letter represent a number from 1 to 9. Find out what does letter D and Grepresent if letter A=4?
Recent Answer : Added by Eva On 2022-04-02 06:59:23:
D=5, G=1
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Ques:- If the area of circle is 616 sq cm thenWhat is its circumference?
Recent Answer : Added by Meghana.N On 2021-08-05 17:35:31:
Answer:50.24
Explanation:
Area of a circle =π*r*r
616=π*r*r
r*r= 616÷3.14
r*r =196
r =13
Circumference of a circle= 2*π*r
=2*π*13
=16*3.14=50.24
Ques:- General and Technical
Ques:- 1027.05 ? 314.005 + 112.25 = ?
Recent Answer : Added by Admin On 2020-05-17 12:03:28:
sorry the above ans was typed by mistake the correct ans is…..
1027.05 ? 314.005 + 112.25 = ?
ans:
1027.05 – 314.005 + 112.25 = 825.295
Ques:- The speed of a train is 90 kmph. What is the distance covered by it in 10 minutes?
Recent Answer : Added by Sahana HP On 2021-10-12 12:52:44:
Distance =speed ×time
Speed =90kmph
90km take 60min time to reach
In 10min the distance covered =?
D=90×10/60
900/60
D=15
Ques:- What are your areas of interest?
Ques:- For 15 people–each has to pay Rs.20.For 20 people–each has to pay Rs.18. For 40 people–how much has each to pay ?
Recent Answer : Added by Admin On 2020-05-17 12:02:02:
FOR 15 = RS.20
FOR 20 = RS.18
FOR 25 = RS.16
FOR 30 = RS.14
FOR 35 = RS.12
FOR 40 = RS.10
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Ques:- Murali travelled from city A to city B at a speed of 40 kmph and from city B to city C at 60 kmph. What is the average speed of Murali from A to C given that the ratio of distances between A to B and B to C is 2 : 3?
Recent Answer : Added by DK BOSS On 2021-07-17 06:18:20:
Answer: 50 kmph.
Explanation:
Let the distances between city A to B and B to C be 2x km and 3x km respectively.
Total time taken to cover from A to C
= (2x)/40 + (3x)/60 = (6x + 6x)/120 = 12x/120 = x/10 Average speed = (2x + 3x)/(x/10) = 50 kmph.
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Ques:- If I walk at 3 kmph, I miss the train by 2 min, if however, I walk at 4 kmph. I reach the station 2 min before the arrival of the train. How far do I walk to reach the station?
Recent Answer : Added by Admin On 2022-09-29 16:36:42:
answer :
Let the distance which I walk to the station be x km Then Time needed to reach the station at 3 km/hr = (3x+602) hrs and
Time needed to reach the station at 4 km/hr = (4x+602) hrs But 3x+301=4x−301⇒3x−4x=−302=151
⇒124x−3x=151⇒12x=151⇒x=1512=54 km
30mins
Let the total time taken to fill the tank be x minutes.
Then, work done by B in half hour + work done by (A+B) in half hour =1.
(
40
1
×
2
x
)+(
60
1
+
40
1
)×
2
x
=1
⇒
80
x
+
48
x
=1
⇒
240
3x+5x
=1
⇒8x=240
⇒x=30 min