# DES Interview Questions Answers, HR Interview Questions, DES Aptitude Test Questions, DES Campus Placements Exam Questions

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All of the questions listed below were collected by students recently placed at DES.

Ques:- A train 132 m long passes a telegraph pole in 6 seconds. Find the speed of the train
A. 70 km/hr
B. 71 km/hr
C. 72 km/hr
D. 79.2 km/hr

79.2

Ques:- A car averages 55 mph for the first 4 hours of a trip and averages 70 mph for each additional hour. The average speed for the entire trip was 60 mph. How many hours long is the trip?

55 + 70 = 125
125/14hrs = 60 mph
14 hours

Ques:- A sales person multiplied by a number and get the answer 3. Instead of that number divided by 3. What is the answer she actually has to get.

1/3

Ques:- A car is filled with 4.5 gallons of fuel for a round trip . Car is taken 1/4 more than in going than coming up. What is the fuel consumed in coming up ?

Fuel to go = x + (x/4)=5x/4
Fuel to come = x
now,
x+(5x/4) = 4.5
9x/4 = 4.5
9x = 18
x = 2 (Fuel to comeup)
Fuel to go will be:
2+(2/4) = 2 + (0.5) = 2.5

Ques:- A square Island surrounded by bigger square, and in between there is infinite depth water. The distance between them is L. The wooden blocks of L are given.The L length block can't be placed in between to cross it, as it will fall in water (just fitting).How would you cross using these L length blocks.
Ques:- 1/3 of girls , 1/2 of boys go to canteen .What factor and total number of classmates go to canteen.
Ques:- Do you have a long & short-term plan for your department? Is it realistic?
Ques:- Why do you want to leave the current job that you are in now?
Ques:- What are your +ve and -ve qualities?
Ques:- What do you do when you are free? How do you manage your free time, hobbies and interest.
Ques:- Demand for salary?
Ques:- HR round about my self etc
Ques:- A coffee shop blends 2 kinds of coffee,putting in 2 parts of a 33p. a gm. grade to 1 part of a 24p. a gm.If the mixture is changed to 1 part of the 33p. a gm. to 2 parts of the less expensive grade,how much will the shop save in blending 100 gms.

Initially (2*33 + 1*24)/(2+1) = 30p a gm
So, cost for 100g = 100*30 = 3000p

Later, (1*33 + 2*24)/(1+2) = 71/3 p a gm.
So, cost for 100g = 100*(71/3) = 2366.67p

He saves 3000 – 2366.67 = 633.33p

Concept of weighted average.

Ques:- Can you change your work profile to IT ?
Ques:- Evaluate x from the the equation : 6x – 27 + 3x = 4 + 9 – x

4

Ques:- The ratio of two numbers is 2:3 and the sum of their cubes is 945. What is the difference of number ?

Let numbers be 2x, 3x
Given: (2x)^3 + (3x)^3 = 945
8x^3 + 27x^3 = 945
x = 3
Difference between numbers = 3x – 2x = x
Hence difference = 3

Ques:- The wheels revolve round a common horizontal axis. They make 15, 20 and 48 revolutions in a minute respectively. Starting with a certain point on the circumference down wards. After what interval of time will they come together in the same position?
Ques:- Four couples sit around a circular table in a party. Every husband sits to the right of his wife. P, Q, R and S are husbands and T, U, V and W are wives. Q – U and R – V are two married couples. S does not sit next to V. T sits to the left of P, who sits opposite S. If every husband interchange his position with the person sitting opposite to him, then who sits between S and R?

P Q R S

TP -> UQ -> RV -> SW

U sits opposite to S

Q sits in between S and R (after interchange)

Ques:- Can you give me a list of five things that make you nervous?