Road commission for oakland Interview Questions, Process, and Tips

Ques:- Two trains of equal length when moving in opposite direction takes 5 sec. to cross each other completely and when moving in same direction takes 15 sec. Find the ratio of their speed.
Recent Answer : Added by Deven Sharma On 2023-05-31 18:18:48:

Let’s assume the length of each train is ‘L’ and the speeds of the two trains are ‘V₁’ and ‘V₂’ respectively.

When the trains are moving in the opposite direction, their relative speed is the sum of their individual speeds. The total distance they need to cover is the sum of their lengths. Since they cross each other completely in 5 seconds, we can set up the following equation:

(V₁ + V₂) × 5 = 2L

When the trains are moving in the same direction, their relative speed is the difference between their individual speeds. The total distance they need to cover is the difference between their lengths. Since they cross each other completely in 15 seconds, we can set up the following equation:

(V₁ – V₂) × 15 = 2L

Now, let’s solve these equations to find the ratio of their speeds.

From the first equation, we have:
(V₁ + V₂) × 5 = 2L
V₁ + V₂ = (2L) / 5

From the second equation, we have:
(V₁ – V₂) × 15 = 2L
V₁ – V₂ = (2L) / 15

Let’s add these two equations together:
V₁ + V₂ + V₁ – V₂ = (2L) / 5 + (2L) / 15
2V₁ = (6L + 2L) / 15
2V₁ = (8L) / 15
V₁ = (4L) / 15

So, the speed of the first train is (4L) / 15.

Now, let’s substitute this value back into the first equation to find V₂:
(4L) / 15 + V₂ = (2L) / 5
V₂ = (2L) / 5 – (4L) / 15
V₂ = (6L – 4L) / 15
V₂ = (2L) / 15

Therefore, the speed of the second train is (2L) / 15.

The ratio of their speeds is given by:
(V₁ / V₂) = ((4L) / 15) / ((2L) / 15)
(V₁ / V₂) = 4L / 2L
(V₁ / V₂) = 2

So, the ratio of their speeds is 2:1.

Ques:- Do you think this company is ambitious and if so, why?
Ques:- Why this company will choose you?
Ques:- B – 1, B – 2 and B – 3 are three buses that travel from Mumbai to Delhi. Each bus starts at a different time and arrives at a different time. The digit in the bus number and the order of their departure of arrival is not the same. The first bus to leave Mumbai is the third bus to reach Delhi. Which is the first bus to leave Mumbai?
Recent Answer : Added by DK BOSS On 2021-07-21 15:26:32:

B1

Ques:- A store owner is packing small radios into larger boxes that measure 25 in. by 42 in. by 60 in. If the measurement of each radio is 7 in. by 6 in. by 5 in., then how many radios can be placed in the box?
Ques:- Are you able to work in any shifts?
Ques:- A camel rests by a pile of 3000 bananas at the edge of a 1000-mile-wide desert. He plans to travel across the desert, transporting as many bananas as possible to the other side. He can carry up to 1000 bananas at any given time but he must eat one banana at every mile. What is the maximum number of bananas the camel can transport across the desert? How does he do it?
Recent Answer : Added by Ranjith S On 2021-10-28 16:05:52:

2000

Ques:- Two people are travelling through flight. Both have parachute and jump anywhere randomly i.e none of them knows who has jumped where.(Assume there's a big desert and they jump at any random location). Now, both of them have a single piece of paper on which they can write instructions before jumping and that's the only way they can meet each other. What would they write on paper before jumping ?
Ques:- A person wants to buy 3 paise and 5 paise stamps costing exactly one rupee. If he buys which of the following number of stamps he won't able to buy 3 paise stamps.
Ques:- Why want to leave
Ques:- A certain sum becomes four times itself at simple interest in eight years. In how many years does it become ten times itself?
Ques:- Why haven’t you done your PG?
Ques:- How much steel required for 1 sq.m area?
Ques:- Here is a sequence of numbers: 1 11 21 1211 111221 It seems to be a strange sequence, but yet there is a system behind it… What is the next term in this sequence?
Recent Answer : Added by Kajal Thosar On 2022-05-17 09:09:10:

1121221

Ques:- If 3 workers collect 48 kg of cotton in 4 days, how many kg of cotton will 9 workers collect in 2 days?
Recent Answer : Added by Yadu Krishnan S On 2022-08-14 16:42:43:

72

Ques:- ?France 24? is?
Ques:- Diophantus passed one sixth of his life in childhood, one twelfth in youth, and one seventh more as a bachelor; five years after his marriage a son was born who died four years before his father at half his final age. How old is Diophantus?
Ques:- 121 : 169 :: 361 : __
Recent Answer : Added by chereddynagirreddy On 2021-08-11 07:22:43:

441=21^2

Ques:- There are 1997 doors in a auditorium and as many as people as the no of doors open enter the auditorium .A door was closed and as many as people as no of doors open leave the auditorium . the process was repeated till the no of doors is equal to1.find the total no of peoples enter the auditorium?
Recent Answer : Added by Admin On 2020-05-17 12:02:12:

1997

Ques:- A certain amount earns simple interest of Rs. 1750 after 7 years. Had the interest been 2% more, how much more interest would it have earned?
Recent Answer : Added by bruce On 2021-05-06 12:41:06:

I think –

1750 / 7 Years = 250
250 * 2% = 5
5 * 7 Years = 35

Ques:- Pipe A can fill a tank in 6 hours. Due to a leak at the bottom, it takes 9 hours for the pipe A to fill the tank. In what time can the leak alone empty the full tank?
Ques:- About Family background, Checked the communication skill, way of dispensing the medicine.
Ques:- ABOUT YOUR ACHIVEMENTS
Ques:- Each side of a rectangle is increased by 100% . How much the percentage of area will be increased
Recent Answer : Added by Admin On 2020-05-17 11:59:16:

x,y sides of rectangle
area=xy
increased by 100% =double length
hence
new area=4xy
increased area=4xy-xy=3xy
percentage of area will be increased
by 300%

Ques:- What is the recent name of UTI bank?
Ques:- A cistern which could be filled in 9 hours takes one hour more to be filled owing to a leak in its bottom. If the cistern is full in what time will the leak empty it?
Recent Answer : Added by Sonali On 2020-11-17 15:27:52:

90 hours

Ques:- Why do you want to work for this company?
Ques:- How to introduce ourself
Ques:- What are your biggest achievements till date?
Ques:- A train covered x km at 40 kmph and another 2x km at 20 kmph. Find the average speed of the train in covering the entire 3x km.
Recent Answer : Added by Rakesh Keshri On 2021-09-07 17:39:41:

24kmph

time taken = x/40 + 2x/20
=> x=8
so, 3x = 24

Contact with us regarding this list

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.

Scroll to top