Zengo & Co Interview Questions, Process, and Tips

Ques:- A train 110 m long is running with a speed of 60 km/hr. In what time will it pass a man who is running at 6 km/hr in the direction opposite to that in which the train is going?
Ques:- A 5 litre jug contains 4 litres of a salt water solution that is 15 percent salt. If 1.5 litres of the solution spills out of the jug, and the jug is then filled to capacity with water, approximately what percent of the resulting solution in the jug is salt?
A. 7.5%
B. 9.5%
C. 10.5%
D. none
Recent Answer : Added by Admin On 2020-05-17 12:05:46:

5 litre jug contains 4 litres of salt water solution
with 15% of salt, that means it has 4000*.15 = 600 ml salt
in it.
If 1.5 litres solution is spills out, remaining solution
is 2.5 litres, then the salf content is 2500*.15 = 375ml.
Now, the jug is filled to full capacity with water i.e.,
now the jug has 5 litre solution in it.
Now, the salt content is 375/5000 = 7.5%

Ques:- Three pipes A, B and C can fill a tank from empty to full in 30 minutes, 20 minutes and 10 minutes respectively. When the tank is empty, all the three pipes are opened. A, B and C discharge chemical solutions P, Q and R respectively. What is the proportion of solution R in the liquid in the tank after 3 minutes?
Recent Answer : Added by Manan On 2022-08-14 18:01:24:

6/11 or 54.54%

Ques:- Find the sum The difference between the compound and S.I. on a certain sum of money for 2 years at 10% per annum is Rs.15of money?
Ques:- What is the smallest number by which 2880 must be divided in order to make it into a perfect square ?(a) 3(b) 4(c) 5 (d) 6
Recent Answer : Added by Aanchal Thakur On 2022-03-09 16:41:11:

5

Ques:- How many regions (open or closed) can n straight lines give at the maximum?
Ques:- Two boats start from opposite banks of river perpendicular to the shore. One is faster then the other. They meet at 720 yards from one of the ends. After reaching opposite ends they rest for 10mins each. After that they start back. This time on the return journey they meet at 400yards from the other end of the river. Calculate the width of the river.
Ques:- Product of Prime no. between 1 to 20?
Recent Answer : Added by Admin On 2020-05-17 12:02:00:

2*3*5*7*11*13*17*19=9699690

Ques:- The LCM of two numbers is 2079 and their HCF is 27. If oneof the numbers is 189, find the other number.
A. 248
B. 128
C. 297
D. 336
E. None of these
Recent Answer : Added by Mahek On 2021-09-05 11:26:36:

297

Ques:- Why would you choose this organization and not someone else?
Ques:- In a company printing work is done by two machine 5% of the work done by machine A are wasted, and 40% of work done by machine B are wasted. if the 80% of the total work is done by machine A. then what is the total percentage of wastage.
Recent Answer : Added by Spandan Dixit On 2021-08-04 15:53:58:

12%

Ques:- Balance the equation 101 – 102 = 1 by putting some operators in it?
Ques:- opposite to ESSENTIAL?
Recent Answer : Added by Admin On 2020-05-17 12:01:22:

DISSENTIAL

Ques:- A school is going to have 1000 students in near future. 1/4th use scooter, 1/5th use bikes and 1/9th use cycle. Find the number of students at present.
Recent Answer : Added by Pijus Ghosh On 2021-12-17 16:08:32:

562.

Ques:- P and Q can do a piece of work in 7 days. With the help of C they finish the work in 5 days. R alone can do that piece of work in?
Ques:- Give 3 reasons, why I should recruit you.
Ques:- Make one sentence which includes the word because three times?
Recent Answer : Added by Madhan Babu On 2022-08-14 16:42:41:

No sentence can end with because because, because is a conjunction

Ques:- Personal Background & conditions
Ques:- Divide Rs.32000 in the ratio 3:5?
Ques:- You are given with two identical iron bars. one of them is magnetized and the other is not. u are suppose to find which one is magnetized. u are not suppose to use any other thing.
Ques:- What is happiness for you?
Ques:- If PQRST is a parallelogram what it the ratio of triangle PQS & parallelogram PQRST
Recent Answer : Added by Admin On 2020-05-17 11:59:29:

1:2

Ques:- What is the planning of your future?
Ques:- Capable of handling the execution activity
Ques:- Five friends M, K, T, P and N are sitting around a circlefacing towards the center. K is sitting between M and P. Nis to the immediate right of M. Who is to the immediateright of T?
Recent Answer : Added by Admin On 2020-05-17 12:03:40:

( b ) P

Ques:- About hostel & my college
Ques:- Tell me about a time when old solutions didn’t work?
Ques:- What song best describes your work ethic?
Ques:- (999)2 – (998)2 = ?
A. 1992
B. 1995
C. 1996
D. 1997
Recent Answer : Added by Mousumi On 2022-10-09 06:56:19:

(999)2-(998)2
=998001-996004
=1997

Ques:- A person needs 6 steps to cover a distance of one slab. If he increases his foot length (step length) by 3 inches, he needs only 5 steps to cover the slabs length. What is the length of the each slab
Recent Answer : Added by Gary On 2021-08-23 11:42:46:

90 inches

Slab = 6(x) where x is each step
Slab = 5(x + 3)

6(x) = 5(x + 3)
6(x) = 5(x) + 15
x = 15 inches

So 6(x) = 6(15) = 90

Check: 5( x + 3) = 5(18) = 90

Slab size is 90 inches

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Devendra Bhardwaj With a decade of experience as a Job Hiring Expert, I am a results-driven professional dedicated to elevating recruitment strategies. My expertise lies in navigating the dynamic landscape of talent acquisition, employing innovative approaches to attract, assess, and secure top-tier candidates. I excel in optimizing hiring processes, leveraging cutting-edge technologies, and fostering collaborative relationships with stakeholders. A keen understanding of industry trends allows me to stay ahead, ensuring a competitive edge in securing the best talent for your organization. I am passionate about connecting the right people with the right opportunities and thrive in creating impactful, streamlined recruitment solutions.

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