Ques:- Two trains are on same track and they are coming toward each other. The speed of first train is 50 KMs/h and the speed of second train is 70 KMs/h. A bee starts flying between the trains when the distance between two trains is 100 KMs. The bee first flies from first train to second train. Once it reaches the second train, it flies back to the second train ? and so on until trains collide. Calculate the total distance traveled by the bee. Speed of bee is 40 KMs/h. .
Recent Answer : Added by DK BOSS On 2021-07-15 09:17:12:
Answer: 66.67 km approx.
Solution:
Let the first train A move at u km/h.
Let the second train B move at v km/h.
Let the distance between two trains be d km
Let the speed of bee be b km/h
Therefore, the time taken by trains to collide = d/(u+v)
Now putting all the known values into the above equation, we get,
u = 50 km/hr
v = 70 km/hr
d = 100 km
b = 80 km/hr
Therfore, the total distance travelled by bee
= b*d/(u+v)
= 80 * 100/(50+70)
= 66.67 km (approx)
Ques:- If A/B = 3/5,then 15A = ?
Recent Answer : Added by Sandeep On 2021-07-31 16:36:01:
15a=45
Ques:- Tell you about a time when you failled to meet a deadlinewhat were the repercussions?
Ques:- Find out the total numbers between 1 to 999 that are neither divisible by 8 nor by 12?
Recent Answer : Added by Admin On 2020-05-17 12:02:07:
divisible by 8 – 124
” 12 – 83
” both – 41
124 + 83 – 41 = 166
999 – 166 = 833
ans is 833…..
Ques:- X, Y and Z enter into partnership. X invests some money at the beginning, Y invests double the amount after 6 months, and Z invests thrice the amount after 8 months. If the annual gain be Rs.18000. X’s share is?
Recent Answer : Added by Mohammad Ahli-Gharamaleki On 2022-08-14 16:39:23:
600
Ques:- What is the extent of your participation in major reports that have to be written?
Ques:- What do you consider to be your greatest achievements to date? Why?
Ques:- How can you plant 11 tree in 6 row and each row contain 4 tree?
Ques:- What role do you tend to take in a company?
Ques:- Subtracting 30 from a number, the remainder is one fourth of the number. Find the number?
Recent Answer : Added by Jonáš On 2022-08-14 18:01:24:
40
x – 30 = 1/4 x || *4
4x – 120 = x || -x + 120
3x = 120 || /3
x = 40
Ques:- What is the rate percent when the simple interest on Rs.800 amount to Rs.160 in 4 Years?
Recent Answer : Added by G Vinayaka Bharadwaj On 2022-01-16 17:16:18:
5%
Ques:- A four digit number is divisible by 7 becomes divisible by 3, when 10 is added to it. The largest such number is
A. 9947
B. 9987
C. 9989
D. 9996
Recent Answer : Added by narendra On 2022-09-18 09:02:02:
c
Ques:- Find the odd man out:
1, 5, 14, 30, 50, 55, 91
A. 91
B. 55
C. 50
D. 5
Recent Answer : Added by Admin On 2022-09-23 19:18:43:
C. 50
Ques:- If in a certain code, TEACHER is written as VGCEJGT, how would DULLARD be written in the same code ?
Recent Answer : Added by sofiya patil On 2020-10-29 16:15:13:
TEACHER is written as VGCEJGT, how would DULLARD ?
T value is 19
V value is 21 ,
here we get to know that there is difference of 1 letter between them.
Answer: FWNNCTF.
Ques:- How committed do you think you will be to this position?
Ques:- Two people X & Y walk on the wall of a godown in opposite direction. They meet at a point on one side and then go ahead. X after walking for some time, walks in opposite direction for 15 mtrs.Then again he turns back and walks in the original direction. What distance did Y walk before they met again, if X walks 11 mtrs by the time Y walks
Recent Answer : Added by Admin On 2020-05-17 11:59:43:
i Guess 8 mtrs.
Ques:- C++, DS, Java, .Net, hardware and Networking
Ques:- The perimeter of a semi circle is 144 cm then the radius is?
Recent Answer : Added by Admin On 2022-09-29 17:59:35:
Perimeter of semi circular = πr+2r
Where r is radius , π = 22/7
πr+2r= 144 (given)
(22/7)r +2r = 144
22r+14r = 144*7 (multiply both sides by 7)
36r = 144*7
r= 144*7/36 = 28
radius =28 cm
Area =( 1/2)πr^2
Area=( 1/2 )*(22/7)*28*28
= 1232cm^2
Ans : area is 1232 cm^2
Ques:- A 12*12 feet carpet is to be used for a 16*9 feet floor with just 1 cut.how?
Ques:- Worked experience and personal.
Ques:- What is your current package?
Ques:- Two trains are moving in opposite directions at 60 km/hr and 90 km/hr. Their lengths are 1.10 km and 0.9 km respectively. The time taken by the slower train to cross the faster train in seconds is?
Recent Answer : Added by Admin On 2022-09-29 17:57:30:
Relative speed = 60 + 90 = 150 km/hr.
= 150 x 5/18 = 125/3 m/sec.
Distance covered = 1.10 + 0.9 = 2 km = 2000 m.
Required time = 2000 x 3/125 = 48 sec.
Ques:- Can you work under pressure?
Ques:- How many litres of pure acid are there in 8 litres of a 20% solution?
A. 1.4
B. 1.5
C. 1.6
D. 2.4
Recent Answer : Added by Kasoja Shiva On 2022-03-09 16:26:30:
1.6
Ques:- The post office is to the east of the school while my house is to the south of the school. The market is to the north of the post office. If the distance of the market from the post office is equal to the distance of my house from the school, in which direction is the market with respect to my school?
Recent Answer : Added by Shraddha On 2020-07-29 09:50:35:
North-east
Ques:- Find the odd man out:
13. 253, 136, 352, 460, 324, 631, 244
A. 631
B. 352
C. 324
D. 136
Recent Answer : Added by yasir khan On 2022-01-24 05:52:03:
324
the sum of all = 10
Accept
324 = 3+2+4 =/=10 (NOT EQUAL TO 10)
Ques:- Why are you looking for a change?
Ques:- What is artificial memory?
Ques:- What is the name of ur presentation,application server in urcomp???
To provide the best experiences, we use technologies like cookies to store and/or access device information. Consenting to these technologies will allow us to process data such as browsing behavior or unique IDs on this site. Not consenting or withdrawing consent, may adversely affect certain features and functions.
Functional
Always active
The technical storage or access is strictly necessary for the legitimate purpose of enabling the use of a specific service explicitly requested by the subscriber or user, or for the sole purpose of carrying out the transmission of a communication over an electronic communications network.
Preferences
The technical storage or access is necessary for the legitimate purpose of storing preferences that are not requested by the subscriber or user.
Statistics
The technical storage or access that is used exclusively for statistical purposes.The technical storage or access that is used exclusively for anonymous statistical purposes. Without a subpoena, voluntary compliance on the part of your Internet Service Provider, or additional records from a third party, information stored or retrieved for this purpose alone cannot usually be used to identify you.
Marketing
The technical storage or access is required to create user profiles to send advertising, or to track the user on a website or across several websites for similar marketing purposes.
Answer: 66.67 km approx.
Solution:
Let the first train A move at u km/h.
Let the second train B move at v km/h.
Let the distance between two trains be d km
Let the speed of bee be b km/h
Therefore, the time taken by trains to collide = d/(u+v)
Now putting all the known values into the above equation, we get,
u = 50 km/hr
v = 70 km/hr
d = 100 km
b = 80 km/hr
Therfore, the total distance travelled by bee
= b*d/(u+v)
= 80 * 100/(50+70)
= 66.67 km (approx)