Ques:- A jogger running at 9 km/hr along side a railway track is 240 m ahead of the engine of a 120 m long train running at 45 km/hr in the same direction. In how much time will the train pass the jogger?
Recent Answer : Added by Ben Gulliano On 2023-05-23 15:53:20:
– While the train is moving, the jogger will also be running in the same direction.
– for the head(engine) of the train to get to the current position of the jogger 240m away, it will take:
45km/hr => 12.5m/s => 240/12.5 = 19.2 seconds.
– But in the same period of time, the jogger will still be running and will have moved to a new location by: 9km/hr => 2.5m/s => 2.5 * 19.2 = 48m
To get to the new location at the speed of 12.5m/s will take the train:
48/12.5 = 3.84sec
In this additional time, the jogger will move forward by:
3.84 * 2.5 = 9.6m
at a speed of 12.5m/s, it will take the train less than a second to cover the additional 9.6m
If we add the distance the jogger will cover in 1 second to 9.6, it is still less than what the train can cover per second. let us see (9.6 + 2.5 = 12.1)
Therefore, the head of the train will pass the runner at approximately: 19.2 + 3.84 + 1 => 24.04 seconds.
For the train to completely pass the runner, it will need its whole length of 120m to be in front of the runner.
This will take an additional (9.6 + 2) seconds.
Therefore for the length of the train to be ahead of the runner it will take approx. 35.65 (24.04 + 9.6 + 2) seconds
Ques:- Are you willing to change your role and profile when required for a project?
Ques:- There are two water tanks X andY , X is much smaller than Y. While water fills at the rate of 1 liter every hour in X, it gets filled up like, 10, 20, 40, 80, 160 in tank Y. (At the end of first hour, Y has 10 liters, second hour it has 20 liters and so on). If tank Y is 1/32 filled of the 21 hours, what is total duration of hours required to fill it completely?
Recent Answer : Added by Grace On 2020-11-25 15:02:28:
Ques:- A person is prisoned for 60 days . In that 60 days he earns rs.170.If he works he will get payed Rs.7 per day. If he doesn’t work Rs.3 he should pay to that prison.Find out how many days he worked.
Recent Answer : Added by ANCHAL PHUTELA On 2021-07-21 15:24:44:
He will work for 35 days in 60 days to earn Rs.170 as per the condition
Ques:- If VICTORY is coded as YLFWRUB, how can SUCCESS be coded ?
Recent Answer : Added by Énio Carlos On 2022-08-14 16:46:41:
The answer for this question is very simple: it is called Ceaser Cipher.
It consists of replacing a character by another located in (current character position + (key-1)), where key = how many positions you want to skip.
For Example: VICTORY -> YLFWRUB with the key = 3.
Then SUCCESS -> QXFFHQQ
Note: it should work like a circle(Z+1 = A).
Ques:- Mr. T has a wrong weighing pan. One arm is lengthier than other. 1 kilogram on left balances 8 melons on right. 1 kilogram on right balances 2 melons on left. If all melons are equal in weight,what is the weight of a single melon?
Recent Answer : Added by samarth khare On 2021-06-23 17:56:06:
Suppose the lengthier arm of weighing pan is of x cm and other arm is y cm .Also let weight if each melon be m kg.
so applying equilibrium of torque principles ,we get
case 1:-
1x-8my=0
case 2:-
2mx-1y=0
using case 1 equation , we substitute value of x into case 2 equation;
16mmy-1y=0
(16mm-1)y=0
y is length of weighing arm and cannot be 0,
therefore ,
16mm-1 =0
16mm=1
mm=1/16
m= square root (1/16)
m=+-1/4
m is weight of melon and cant be negative.
Hence m, weight of one melon is 1/4 kg
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Ques:- A right circular cylinder and a cone are there. Base radius of cone is equal to radius of cylinder. What is the ratio of height to slant side if their volume are the same?
Recent Answer : Added by Admin On 2020-05-17 12:01:55:
underroot(1-r^2)/3
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Ques:- To which the fourth book of Kautilyas Arthashastra deals with
Ques:- Which greatest number will divide 3026 and 5053 leaving remainders 11 and 13 respectively?
A. 15
B. 30
C. 40
D. 45
Recent Answer : Added by Vijay Vinod On 2022-09-16 14:52:15:
Answer is 45
First we need to subtract those reminders from the respective numbers, then we have to find the hcf of two numbers(numbers got from the subtraction) then you will get the answer.
So,
After subtraction you will get
3026-11 = 3015
5053-13 = 5040
HCF of these two numbers
5 | 3015 5040
3 | 603 1008
3 | 201 336
| 67 112
We can’t find a common diviser since 67 is a prime number
So the HCF = 5 * 3 * 3
= 45
5*3*3 = 45
Ques:- How many such letters are there in the word ORIENTAL each of which is as for away from the beginning of the word as when they are arranged alphabetically?
Recent Answer : Added by DK BOSS On 2021-07-17 10:05:37:
Answer: Option C two
Ques:- Have you ever had to discipline a problem employee? If so, how did you handle it?”
Ques:- A room is 15m long, 4m broad and 3m height. Find the cost of white washing its four walls at 50p per m2Â ?
Recent Answer : Added by Sourabh Singh Rawat On 2021-10-10 19:03:37:
2*3(15+4)=114
114*1/2=57 rs
Ques:- If water is called food, food is called drink, drink is called blue, blue is called red, red is called white and white is called brown, then what is the colour of “blood” ?
A. Blue
B. Red
C. Brown
D. White
E. Drink
Recent Answer : Added by Manga Ravikumar On 2022-03-09 16:45:58:
red
Ques:- If A lends Rs.3500 to B at 10% per annum and B lends the same sum to C at 11.5% per annum then the gain of B in a period of 3 years is?
Recent Answer : Added by LYNETTE On 2021-11-09 15:53:46:
3500*10/100
3500*11.5/100 = 402.5 per year
402.5×3 = R1207.5
Ques:- Sum of two numbers is 15. Two times of the first exceeds by 5 from the three times of the other. Then the numbers will be?
Recent Answer : Added by Joseph Owusu On 2022-03-11 17:00:39:
The first number is 10 and the second number is 5
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Ques:- How do u write 6th may 2011 in 5 letters without using number??
Ques:- Explain a database in three sentences to your eight-year-old nephew
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Ques:- Where could you use some improvement?
Ques:- There is food for 760 men for 22 days. How many more men should join after two days so that the same food may last for 19 days more?
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Ques:- ASKED ABOUT FAMILY BACKGROUND
Ques:- A swimmer jumps from a bridge over a canal and swims 1 kilometer stream up. After that first kilometer, he passes a floating cork. He continues swimming for half an hour and then turns around and swims back to the bridge. The swimmer and the cork arrive at the bridge at the same time. The swimmer has been swimming with constant speed. How fast does the water in the canal flow?
Recent Answer : Added by ANTONYSAMY Santhanamarian On 2021-11-09 15:53:51:
1 km/hr
Ques:- A boy multiplied a number with 10 and got 100. If he divided it by 10, what would be the answer?
Recent Answer : Added by deepti On 2021-05-28 08:49:33:
1
Ques:- What will be the value of 25 mps in kmph?
Recent Answer : Added by MURUNGI ALIMAHAD On 2021-10-10 19:03:36:
10000
Ques:- 7^101+18^101 is a multiple of a.15 b.25 c.35 d.45
Recent Answer : Added by Khagesh On 2022-10-17 15:58:03:
25
Ques:- A bag contains five white and four red balls. Two balls are picked at random from the bag. What is the probability that they both are different color?
Recent Answer : Added by Akash Chandra Khan On 2022-01-08 16:06:55:
The probability will be
white ball = 5/9
red ball = 4/9
The answer can be 5/9 and 4/9 or 1
– While the train is moving, the jogger will also be running in the same direction.
– for the head(engine) of the train to get to the current position of the jogger 240m away, it will take:
45km/hr => 12.5m/s => 240/12.5 = 19.2 seconds.
– But in the same period of time, the jogger will still be running and will have moved to a new location by: 9km/hr => 2.5m/s => 2.5 * 19.2 = 48m
To get to the new location at the speed of 12.5m/s will take the train:
48/12.5 = 3.84sec
In this additional time, the jogger will move forward by:
3.84 * 2.5 = 9.6m
at a speed of 12.5m/s, it will take the train less than a second to cover the additional 9.6m
If we add the distance the jogger will cover in 1 second to 9.6, it is still less than what the train can cover per second. let us see (9.6 + 2.5 = 12.1)
Therefore, the head of the train will pass the runner at approximately: 19.2 + 3.84 + 1 => 24.04 seconds.
For the train to completely pass the runner, it will need its whole length of 120m to be in front of the runner.
This will take an additional (9.6 + 2) seconds.
Therefore for the length of the train to be ahead of the runner it will take approx. 35.65 (24.04 + 9.6 + 2) seconds