Two people enter a race in whick you run to a point and
back. Person A runs 20 mph to and from the point. Person B
runs to the point going 10 mph and 30 mph going back.
Who came in first?
- 2 Answers
- 13723 Views
- I also Faced
- E-Mail Answers
Answer Posted / guest
Person A came in first.
Let's assume that the distance between start and the point
is D miles.
Total time taken by Person A to finish
= (D/20) + (D/20)
= D/10
= 0.1D
Total time taken by Person B to finish
= (D/10) + (D/30)
= 2D/15
= 0.1333D
Thus, Person A is the Winner.
Alternatively (if you don't like mathematics ;)), analyse
the situation as follow:
Note that initially speed of Person A (20 mph) was twice the
speed of Person B (10 mph). Hence, when Person A (20 mph
forward) reached the point, Person B (10 mph forward) was
halfway. When Person A (20 mph back) finished, Person B
(still 10 mph forward) reached the point.
Thus, Person A wins the race and by that time Person B
covers only half the distance, no matter how far the point is!!!
| Is This Answer Correct ? | 21 Yes | 0 No |
Post New Answer View All Answers
Three neighbours are there. 1st one lends 2nd and 3rd that many no.of tractors that then already each had.After few months , 2nd lends to 1st and 3rd that many tractors then they had. After a few months 3rd lends to 1st and 2nd that many tractors then they had.Now each of them got 24. Find howmany they had initially?
Ship is 180 miles away from shore. At that time a plane started from shore to pass some information to the ship with 10 times velocity of ship's velocity. At what distance from shore they will meat?
There is puzzle with the word "CONSTANTINE" and exactly don't know the question if anybody knows the Q&A plz send it ahmed.basha.munna@gmail.com
4_4_4_4=22 use all sign of maths
why should we hire the others waiting to be interviewed?
Three members are hunting in a forest.While crossing a streem cartridges of two of them gets wetted up.Then the third person decides his cartidges equally. After 4 shots of each person, total cartridges remaining are equal to what each had initially after sharing.How many total cartridges they initially they shared?
P pages read in d mins after day p+1 pages read in d+1 mins last day 379 pages done in 317 mins find p+4
what job position/s are you currently holding with your current employer?
sir i need catholic syrian bank previous question papers fully. it will be helpful for me to greater extend .please do the needful to me.
At 6o'clock ,a watch strokes 6 times.The time between first and last is 30secs.At midnight 12o' clock how much time for all strokes?
foot is related to man in the same way hoof is related to...........
Wo kay chej hi jo saal may 1 baar aata hai months may 2 baar aata hai weeks may 4 baar aata hai or din may 6 baar
In country X, democratic, conservative and justice parties have fought three civil wars in twenty years. TO restore stability an agreement is reached to rotate the top offices President, Prime Minister and Army Chief among the parties so that each party controls one and only one office at all times. The three top office holders must each have two deputies, one from each of the other parties. Each deputy must choose a staff composed of equally members of his or her chiefs party and member of the third party. 1. When Justice party holds one of the top offices, which of the following cannot be true (a) Some of the staff members within that office are justice party members (b) Some of the staff members within that office are democratic party members (c) Two of the deputies within the other offices are justice party members (d) Two of the deputies within the other offices are conservative party members (e) Some of the staff members within the other offices are justice party members. 2. When the democratic party holds presidency, the staff of the prime minister's deputies are composed I. One-fourth of democratic party members II. One-half of justice party members and one-fourth of conservative party members III. One-half of conservative party members and one-fourth of justice party members. (a) I only (b) I and II only (c) II or III but not both (d) I and II or I and III (e) None of these 3. Which of the following is allowable under the rules as stated: (a) More than half of the staff within a given office belonging to a single party (b) Half of the staff within a given office belonging to a single party (c) Any person having a member of the same party as his or her immediate superior (d) Half the total number of staff members in all three offices belonging to a single party (e) Half the staff members in a given office belonging to parties different from the party of the top office holder in that office. 4. The office of the Army Chief passes from Conservative to Justice party. Which of the following must be fired. (a) The democratic deputy and all staff members belonging to Justice party (b) Justice party deputy and all his or hers staff members (c) Justice party deputy and half of his Conservative staff members in the chief of staff office (d) The Conservative deputy and all of his or her staff members belonging to Conservative party (e) No deputies and all staff members belonging to conservative parties.
how soon can you travel down to start your new job?
sir i need generalKnowledge previous questions for rrb secunderabad goods guard exam
