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????

Answer Posted / padmini

L.c.m(120/7-5,120/15-5) gives 60sec as answer

Is This Answer Correct ?    12 Yes 5 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

Two trains in the same direction at 50 & 32 kmph respectively. A man in the slower train observes the 15 seconds elapse before the faster train completely passes him. What is the length of faster train ?

692


the ticket sales s for a company increases 25% from standard sales to 60 tickets sold, then 60 - s =:

1730


A cube 3"* 3"* 3" is painted green it is cut into 1"* 1"* 1" how many cubes were painted on atleast on one side

703


a cylinder ingot 6cms in diameter and 6 cms in height is and spheres all of the samesize are made from the material obtained.what is the diameter of each sphere?

853


3/p=6, 3/q=15 ......find p-q

846






what is diff b//w the singly reinforced beam,doubly reinforced beam?

1352


A father F has 5 sons, p,q,r,s,t. Not necessarily in this order. Two are of same age. The eldest and youngest cannot be twins. T is elder to r and younger to q and s has three older brothers. who is the oldest and youngest?

758


a hollow space on earth surface is to be fille((d) total cost of filling is rs 20000. The cost of filling per mt3 is rs 225 .how many times a size of 3 mt3 soil is required to fill the hollow space?

700


The ratio of the number of boys and girls in a school is 3:2 Out of these 10% the boys and 25% of girls are scholarship holders. % of students who are not scholarship holders.?

794


Zulus always speak truth and Hutus always speak lies. There are three persons A,B&C. A met B and says " I am a Zulu or I am Hutu". We don't know what exactly he said. then B meets C and says to c that " A is a Zulu ". Then C replied " No, A is a Hutu ". Who must be a Zulu ?

834


An equilateral triangle of sides 3 inch each is given. How many equilateral triangles of side 1 inch can be formed from it?

936


a father is 30 times more than his son however he will be only thrice as old as the son what is father's present age ?

701


Six squares of same dimension are kept side by side to make a rectangle with a perimeter of 182 cm. what is the perimeter of each square.

728


If x,y,z are three consecutive natural numbers, which of the following numbers should be x+y+z

731


A certain number of bullets were shared by 3 people equally.Each of them fired 4 bullets and the sum of the remaining bullets was equal to the initial share each had got.what was the initial number of bullets?

854