Interested to Buy Any Domain ? << Click Here >> for more details...
three friends a,b,c run around a circular track of length
120m at a speed of 5,7,15m/sec respectively starting
simultaneously from the same point in the same
direction .how often they three will meet????
- 5 Answers
- 16311 Views
- I also Faced
- E-Mail Answers
Answers were Sorted based on User's Feedback
Answer / thilak desingh
Guys, there can be two ways of interpreting,
1) How often they meet at any point
2) How often they meet at starting point
1) LCM { L/a-b , L/b-c} = 60 seconds
2) LCM { L/a , L/b , L/c } ~ 120 seconds
| Is This Answer Correct ? | 3 Yes | 2 No |
Answer / manish pal
Soln: When two people are running in the same direction the relative speed is the difference in speeds of the two people.
In this case A=5 B=7 C=15
So relative speed of B wrt A is 7-5 = 3m/s
Relative speed of c wrt to a is 15-3 =15m/s
Therefore relative distances will be:
B wrt A is 120/2 =60
C wrt to A 120/12 =12
So they have to bridge this distance of 60 and 12 between them which is the LCM of 60 and 12 which is 60.
so ans is 60 sec
| Is This Answer Correct ? | 4 Yes | 5 No |
Answer / nisha
Time taken by 'a' to cover a circular track = 120/5 = 24
seconds
Time taken by 'b' to cover a circular track = 120/7 seconds
Time taken by 'c' to cover a circular track = 120/15 = 8
seconds
LCM of 24, 8, 120/7 = 120/7seconds = ~ 17 seconds
So the three friends will meet after ~17 seconds
| Is This Answer Correct ? | 6 Yes | 11 No |
Respected Sir/Mem Plz send me all 5 years solved question papers of sbi clerk on my Gmail id and that is chandelmishel@gmail.com
how many types of indexing?
There are 9 balls of these one is defective. Find the minimum no. of chances of finding the defective one.
ques-- fint the sum of series- 1!+2!+....50!=?...
The second was given two nodes of a binary tree find the closest ancestor of the two nodes.
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
Present population of town is 35,000 having males and females. If The population of males is increased by 6% and if the population of females is increased by 4%, then after 1 year the population becomes 36,700. Find the number males and females ?
A, B, C, D, E, F, G and H are sitting along the sides of rectangular table.C and G are sitting exactly opposite to each other. B and C are sitting adjacent to each other in clockwise direction. There is a person seated between G and A as well as between E and G. C is sitting next to D.If H and D are sitting on the same side of the table then who is sitting to the left of G?
can you send me the SBI Clerical post model question papers
0 Answers State Bank Of India SBI,
write a program that prompts the user to enter three sides of a triangle and prints whether it is a right triangle or not.
2, 5,11,23,47,?
Sum of 6 numbers a+b+c+d+e+f = 21 from the set{1,3,5,9}. Condition is Each no can be used max 4 times....that means u have 1,1,1,1 ; 3,3,3,3 ; 5,5,5,5 ; 9,9,9,9 From these 16 numbers find combination 6 numbers which equals to 21.
English 
