Ques:- There is a 50m long army platoon marching ahead. The last person in the platoon wants to give a letter to the first person leading the platoon. So while the platoon is marching he runs ahead, reaches the first person and hands over the letter to him and without stopping he runs and comes back to his original position. In the mean time the whole platoon has moved ahead by 50m. The question is how much distance did the last person cover in that time. Assuming that he ran the whole distance with uniform speed.
Recent Answer : Added by Admin On 2020-05-17 12:00:37:
The last person covered 120.71 meters.
It is given that the platoon and the last person moved with
uniform speed. Also, they both moved for the identical
amount of time. Hence, the ratio of the distance they
covered – while person moving forward and backword – are
equal.
Let’s assume that when the last person reached the first
person, the platoon moved X meters forward.
Thus, while moving forward the last person moved (50+X)
meters whereas the platoon moved X meters.
Similarly, while moving back the last person moved [50-(50-
X)] X meters whereas the platoon moved (50-X) meters.
Now, as the ratios are equal,
(50+X)/X = X/(50-X)
(50+X)*(50-X) = X*X
Solving, X=35.355 meters
Thus, total distance covered by the last person
= (50+X) + X
= 2*X + 50
= 2*(35.355) + 50
= 120.71 meters
Note that at first glance, one might think that the total
distance covered by the last person is 100 meters, as he
ran the total lenght of the platoon (50 meters) twice.
TRUE, but that’s the relative distance covered by the last
person i.e. assuming that the platoon is stationary.
Ques:- If Rs.3250 be divided among Ram, Shyam and Mohan in the ratio of 1/2:1/3:1/4 then the share of each are?
Recent Answer : Added by DK BOSS On 2021-07-17 06:27:52:
Ques:- Three men A, B, C plays Cards. If one loses the game he have to give Rs.3. If he wins the game he will gain Rs.6. If A has won 3 Games, B loses Rs.3, C wins Rs.12.What is the total no. of games played?
Recent Answer : Added by Admin On 2020-05-17 12:01:57:
8 games They played
A own 3 games = 18 Rs
B loss 3 Rs and own 1 games i,e 9(A own 3 Games)-6(B own
1 game)=3
c own 12 Rs and loss 4 games(A own 3+b own 1) and own 4
games i.e 24(own)-12(loss)
so totally A own 3 games
B own 1 game
c own 4 games
=8
Ques:- Tell about yoursekf out of resume?
Ques:- A 6 inch length cylindrical through hole is drilled through the center of sphere, what will be the remaining volume of sphere ?
In this question only one data is given ie., hole length - 6". In the question there is no mistake.
Find the answer.
Recent Answer : Added by Admin On 2020-05-17 12:05:14:
volume of a sphere is 4/3 * pi * r^3
by drilling a hole 6 inches long the volume of the sphere is
not affected bcos the hole is a 1 dimension quantity..(say a
straight line) n so it does not have any value w.r.t volume…
hence the volume of the sphere does not change..
Ques:- Where do you find yourself in 5 years?
Ques:- My job profile
Ques:- How long would you expect to work for us if hired?
Ques:- Some electrical engineering technical queston and some persnal data and completed project details.
Ques:- Why do you want to work for CL?
Ques:- The difference of two consecutive even numbers squares is 84, then what is the sum of these numbers?
Recent Answer : Added by shivaprasad On 2021-10-12 12:52:39:
(x+2)^2 -x^2 = 84
X=20
So (20,22)
Sum= 42
Ques:- A man can row with a speed of 15 kmph in still water. If the stream flows at 5 kmph, then the speed in downstream is?
Recent Answer : Added by isha On 2020-11-08 02:14:20:
20
speed of downstream=speed at still water+flow
= 15+5=20
Ques:- Describe a challenging situation that you have handle, howyou approached the situation and what you learn t from it
Ques:- Do you have any serious medical issues?
Ques:- Number of times 29th day of the month occurs in 400 consecutive year is
A. 4400
B. 4497
C. 4800
D. 4600
Recent Answer : Added by AVIJIT BERA On 2021-11-26 16:30:00:
4400+(97 leap year )=4497
Ques:- Why you choose this bank?
Ques:- What profie you are looking for?
Recent Answer : Added by Hassan Ahmed On 2022-09-15 16:36:21:
I am looking for a qualified chartered accountant in my profile who is known for his excellence in the field.
Ques:- A man has given Rs. 300000 as loan. He lent some of his capital to Ajay at an interest rate of 20% per annum and the rest to Ramesh at an interest rate of 12% per annum. At the end of one year, he got 17% of his capital as interest. How much did he lend to Ajay?
A. Rs. 120000
B. Rs. 140000
C. Rs. 160000
D. Rs. 187500
Recent Answer : Added by Admin On 2022-09-25 04:13:43:
D. Rs. 187500
Ques:- There is a log A having weight 30kgs. The thickness of the log is twice as another log B. And log A is half short as B. What is the weight of B?
Ques:- 15 lts of water containing 20% alcohol, then added 5 lts of water. What is % alcohol.
Recent Answer : Added by Admin On 2020-05-17 11:59:34:
15 litre water contains 20% alcohal ie. 12 (water)+ 3
(alcohol).
after adding 5 liter water it becomes 12+5=17 (water)& 3
(alc.).
ie. 17:3 and answer will be 85:15. ie. 15%.
Ques:- What you want ot do?
Ques:- A sum of money at simple interest amounts to Rs. 815 in 3 years and to Rs. 854 in 4 years. The sum is?
Recent Answer : Added by Shitoshe Wangatia On 2021-12-11 15:07:20:
The last person covered 120.71 meters.
It is given that the platoon and the last person moved with
uniform speed. Also, they both moved for the identical
amount of time. Hence, the ratio of the distance they
covered – while person moving forward and backword – are
equal.
Let’s assume that when the last person reached the first
person, the platoon moved X meters forward.
Thus, while moving forward the last person moved (50+X)
meters whereas the platoon moved X meters.
Similarly, while moving back the last person moved [50-(50-
X)] X meters whereas the platoon moved (50-X) meters.
Now, as the ratios are equal,
(50+X)/X = X/(50-X)
(50+X)*(50-X) = X*X
Solving, X=35.355 meters
Thus, total distance covered by the last person
= (50+X) + X
= 2*X + 50
= 2*(35.355) + 50
= 120.71 meters
Note that at first glance, one might think that the total
distance covered by the last person is 100 meters, as he
ran the total lenght of the platoon (50 meters) twice.
TRUE, but that’s the relative distance covered by the last
person i.e. assuming that the platoon is stationary.