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 point P is on line segment AB, then which of the following is always true? (1) AP = PB (2) AP > PB (3) PB > AP (4) AB > AP (5) AB > AP + PB
Recent Answer : Added by Miss Dorothy Aceng On 2022-09-02 17:03:44:
Recent Answer : Added by Richa Ashu On 2022-08-14 16:31:41:
128
Ques:- In a triangle two angles are in a ratio of 5:3 and the difference of the angles is 30 degrees. Find out the largest angle in the triangle
Recent Answer : Added by S pushpa On 2021-06-17 10:44:18:
Let A=5x,B=3x,C not given so consider C=x
In triangle total angle=180°
A+B+C=180°
5x+3x+x=180°
9x=180°
X=180°/9
X=20°
A=5(20)=100°
B=3(20)=60°
C=20°
Therefore A=100° is the largest angle
Ans: 100°
Ques:- Two trains move in the same direction at 50 kmph and 32 kmph respectively. A man in the slower train observes the 15 seconds elapse before the faster train completely passes by him. What is the length of faster train ?
Ques:- How you wil manage dealer network?
Ques:- Why aren?t you earning more money at this stage of your career?
Ques:- A shopkeeper allows 10% discount on the price of an article and sells it for Rs. 7,600. What is the market price of the article ?
A. Rs. 8,250
B. Rs. 8,500
C. Rs. 8,540
D. Rs. 8,415
E. None of these
Recent Answer : Added by fred.bayzada On 2022-09-15 16:36:14:
E non of those
Ques:- Family member and responsibilities
Ques:- A train 240 m long passed a pole in 24 sec. How long will it take to pass a platform 650 m long?
Recent Answer : Added by dumeel kuppam vavvaalu On 2021-08-25 14:15:33:
From the first statement
Speed=distance/time
=>240/24=10m/s
so speed=10m/s
From the second statement
distance=length of the platform+length of the train=650+240=890m
Time=distance/speed
here, the speed of the train is already calculated
=>890/10=89s
So the time taken by the train to cross the platform is 89 seconds
Ques:- The temperature at Kochi is given by the function: – t2/6+4t+12 where t is the elapsed time since noon. What is the percentage rise (or fall) in temperature between 3.00 PM and 6.00 PM?
Recent Answer : Added by Admin On 2020-05-17 12:04:28:
temp at 3.oo pm is = 22.5
temp at 6.oo pm is = 30
thus, percentage rise= 7.5/30 *100
=25%
Ques:- Given two billion distinct points on a plane such that no three are collinear. I color any half of them red and the Remaining blue. Is it always possible for you to join each red point to one (and Only one) blue point by means of line segments suc…
Ques:- Pandit Birju Maharaj is a well known :
A. Kathak dancer
B. Tabla Master
C. Sarod Master
D. Noneof these
Ques:- Why should we select you, why not others ?
Ques:- If the sum of five consecutive nos. 35? how many prime nos are there?
Recent Answer : Added by DHKrish On 2021-02-24 17:31:30:
Ans is 2(Prime numbers)
Sum of 5 consecutive nos is 35
so X + (X+1) + (X+2) + (X+3)+ (X+4) = 35
5X + 10 = 35
X = 5
So the 5 consecutive numbers are : 5, 6, 7, 8, 9
The Prime numbers are 5 and 7
Ques:- How is my grandmother’s only child’s husband’s mother related to me ?
Recent Answer : Added by Maha On 2022-08-14 16:32:29:
Paternal Grandmother
Ques:- Find the odd man out:
385, 462, 572, 396, 427, 671, 264
A. 671
B. 427
C. 385
D. 264
Recent Answer : Added by Manthan Shukla On 2022-03-11 17:00:08:
427 is the answer
Because
385 means (3+5=8) or (8-3=5) ,
462 means (4+2=6) or (6-2=4) ,
572 means (5+2=7) or (7-5=2) ,
396 means (6+3=9) or (9-3=6) ,
671 means (6+1=7) or (7-6=1) ,
264 means (4+2=6) or (6-2=4) ,
but only 427 is the number in which if we do addition of any of its two digits (e.g 4+2 or 4+7) then its answer doesn’t come 3rd digit
like if we do 4+2 then answer will be 6 so the number should be 426 but it is not
or if we do 7-4 then answer will be 3 (not 2)
so the right answer is 427
Ques:- How about a team with low morale?
Ques:- At present, the ratio between the ages of Arun and Deepak is 4:3. After 6 years, Arun’s age will be 26 years. What is the age of Deepak at present?
Recent Answer : Added by Beauty Chakraborty On 2022-05-17 08:54:03:
21
Ques:- Find the area not occupied by circles: Given length =y breadth =x
Recent Answer : Added by Admin On 2020-05-17 12:02:10:
(1/2)*x*y
Ques:- Describe your past career in 200 words.
Ques:- Working skills and experience details
Ques:- As jobs become more team-oriented, assessment centers willbe used more often for non-management jobs. Do you agree ordiagree?
Ques:- What would you say is the most important thing you are looking for in a job?
Ques:- Two pipes P and Q can fill a tank in 4 and 5 hours respectively. If they are turned up alternately for one hour each, the time taken to fill the tank is?
Recent Answer : Added by shadow of lo On 2022-03-09 16:33:24:
Pfull = 4 Hrs; Qfull = 5 Hrs
Assume velocity Vp = x then Vq = 4/5 x –> avg velocity = (5/5 + 4/5) / 2 = 0.9
If fastest time = 4hrs then the time it would take to fill up tank by alternating is 4/0.9 = 4.44 Hrs
Ques:- The least number which when divided by 16, 18 and 21, leave the remainder 3, 5 and 8 respectively is:
Recent Answer : Added by Gopi Krishna On 2022-08-14 16:28:41:
995
Ques:- A student divided a number by 2/3 when he required to multiply by 3/2. Calculate the percentage of error in his result.
Ques:- What values do you consider important for professional success
Ques:- Where would you be in five years from now?
Ques:- At the time Kalinga war (321B.C.,) Name the king of Kalinga kingdom or Who is the opponent king of The great Asoka?
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)