One train leaves Los Angeles at 15mph heading for New York.
Another train leaves from New York at 20mph heading for Los
Angeles on the same track. If a bird, flying at 25mph,
leaves from Los Angeles at the same time as the train and
flies back and forth between the two trains until they
collide, how far will the bird have traveled?
- 21 Answers
- 40024 Views
- Microsoft, I also Faced
- E-Mail Answers
Answer Posted / sam spade
Assuming the New York train leaves the same time as the Los
Angeles train and the bird, the answer is
5X/12 miles where X is the length of the track in miles.
Since work has to be shown:
[(x mi / 15 mph) - (x mi / 20mph)] = T hours, the amount of
time until the trains crash.
T hours * 25 mph = D miles, the distance the bird can
travel before the trains crash.
Combining the equations will give the answer.
Additionally, as the trains approach each other, the bird
will travel an infinite number of shorter and shorter trips
between the trains.
| Is This Answer Correct ? | 1 Yes | 6 No |
Post New Answer View All Answers
The ratio of length of a rod and its shadow is 1/sqrt(3). Find the angle of elevation.
Two persons start walking from the same place in opposite directions. After walking for 4 mts, both of them take the left and walk for another 3 mts. Then what is the distance b/w them?
32 people playing table tennis. how many matches to determine the winner.
There are two queues at a discount store billing counter. In the first queue there are a1 customers all with b1 items in their cart, while in the second queue there are a2 customers all with b2 items in their cart. It takes t seconds to process each item and p seconds for each person to pay. A customer wishes to know which queue to join.Which one of these options gives the condition for the first queue to be the better queue to join?
sqrt(0.16)+cubic root(0.027) equals
If A=Z, B=Y, C=X, .......... Z=A, Then SOUR = ?
in a single throw of dice ,the chance of throwing a total of 3 is
1,40,00,000 pencils are put up straight. All the pencils are of length range 3 to 6 inches. 80% of the pencils have average of five inches. So find out the total length spanned by the pencils?
Now i am doing RHCE (Red Hat Certified Engineer). Please give some interview questions of linux.
Find the number WXYZ divisible by 36? i) Let the digits be5, 4,3,6 -not in that order ii) Sum of last two digits is 9 iii) Sum of middle two digits is 7->If one is sufficient then ans as A || if two is sufficient then ans as B || if all are necessary then ans as C || if nothing is needed then
In a fraction, if 1 is added to both the numerator at the denominator, the fraction becomes 1/2. If numerator subtracted from the denominator, the fraction becomes 3/4. Find the fraction.
In a square, all the mid points are joined. The inner square is shaded.If the area of the square is A, what is the area of the shaded area?
A speaks truth 70% of the times, B speaks truth 80% of the times.What is the probability that both are contradicting each other is ?
A batsman outs for 23 runs in one inning, which increases his average 15 to 16. If he has to get 18 as average, what score is to make by him in the same innings?
One clock ringes 7 O'clock in 7 sec.In how many seconds it will ring 10 O'clock.
