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.
Ques:- A lends Rs. 2500 to B and a certain to C at the same time at 7% p.a. simple interest. If after 4 years, A altogether receives Rs. 1120 as interest from B and C, then the sum lent to C is?
Recent Answer : :
1500
Ques:- WHAT ARE THE SKILLS REQUIRE TO ENTER IN SOFTWARE INDUSTRY?
Ques:- What is the purpose of the z-index and how is it used?
Ques:- Why you want to leave your current organization??please don't write, looking for good salary.. it can be negative..i am searching a Right sentence..plz suggest…
Ques:- A certain type of mixture is prepared by mixing brand A at Rs.9 a kg. with brand B at Rs.4 a kg. If the mixture is worth Rs.7 a kg., how many kgs. of brand A are needed to make 40kgs. of the mixture?
Recent Answer : :
Answer:
24
Step-by-step explanation:
A + B = 40.
And at Rs 7 a kg for 40 kg, you want a total of Rs.280.
So the second equation is 9A + 4B = 280
From the first equation: B = 40 – A
and sub into the second equation:
9A + 4(40-A) = 280
9A + 160 – 4A = 280
5A = 120
A = 24.
And you should check: B should equal 40-24 = 16. Check with the final equation: 9*24 + 4*16 = 216 + 64 = 280. So it works.
Your answer, of course, is A = 24
Ques:- About project
Ques:- A moves 3 kms east from his starting point . He then travels 5 kms north. From that point he moves 8 kms to the east. How far is A from his starting point?
Recent Answer : :
16
Ques:- Suppose a newly-born pair of rabbits, one male, one female, are put in a field. Rabbits are able to mate at the age of one month so that at the end of its second month a female can produce another pair of rabbits. Suppose that our rabbits never die and that the female always produces one new pair (one male, one female) every month from the second month on.
Ques:- What are the three things that are most important for you in a job?
Ques:- Why should i take you ?
Ques:- Why do you like the place you live in?
Ques:- Does your company provide you with leads?
Ques:- What are your qualification?
Ques:- Draw and explain the TS and HS diagram of Rankine cycle?
Ques:- The H.C.F and L.C.M of two numbers are 44 and 264 respectively. If the first number is divided by 2, the quotient is 44. The other number is
A. 66
B. 132
C. 264
D. 528
Recent Answer : :
let,first num be x and second num be y
hcf =264
lcm=44
given equation
x/2=44 i.e x=88
product of 2 numbers is equal to lcm*hcf
88*y=44*264
y=132
Ques:- When will you join here?
Ques:- If the digits of my present age are reversed then i get the age of my son.If 1 year ago my age was twice as that of my son.Find my present age.
Ques:- About my education, my expectation from the job.
Ques:- When did you last acquire effective knowledge in your own time and how can you apply this towards your career?
Ques:- What do you expect from our company?
Ques:- What is the name of ur presentation,application server in urcomp???
Ques:- HOW MANY MEMBER IN YOUR HOUSE
Ques:- Designer Ragini Singhania?s label Attiraante literallymeans?
Ques:- Find 4 numbers such that sum of every 2 and sum of all 4 are perfect squares.
Ques:- A cyclist drove one kilometer, with the wind in his back, in three minutes and drove the same way back, against the wind in four minutes. If we assume that the cyclist always puts constant force on the pedals, how much time would it take him to drive one kilometer without wind?
Recent Answer : :
3 minutes
Ques:- What were your expectations for the job and to what extent were they met?
Ques:- Introduce my self
Ques:- How you make benefit for company?
Ques:- The proportion of copper and zinc in the brass is 13:7. How much zinc will there be in 100 kg of brass?
Recent Answer : :
35Kg
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.