Three athletes X, Y and Z start running around a circular track of length 60m from the same point simultaneously in the same direction at speeds of 3 m/s, 5 m/

Three athletes X, Y and Z start running around a circular track of length 60m from the same point simultaneously in the same direction at speeds of 3 m/s, 5 m/s, and 9 m/s respectively. After how long will they meet for the first time after they started running?

Three athletes X, Y and Z start running around a circular track of length 60m from the same point simultaneously in the same direction at speeds of 3 m/s, 5 m/s, and 9 m/s respectively. After how long will they meet for the first time after they started running? ?

Created: 1 week ago | Updated: 1 week ago | Created By:

Imran Ahmed

45 sec.

15 sec.

60 sec.

30 sec.

0 1

Best Answer Explained in Below-:

Time take by X to cover a circle = 60/3 = 20 sec Time taken by Y to cover a circle = 60/5 = 12 sec Time taken by Z to cover a circle = 60/9 sec So every 20 sec, X will be at the starting point. Every 12 secs Y will be at the starting point. Every 60/9 sec, Z will be at the starting point. Taking their LCM, we get 60. So every 60 sec, all three will be at the starting point. All meet for the first time at the starting point after they start moving after 60 sec.

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Three athletes X, Y and Z start running around a circular track of length 60m from the same point simultaneously in the same direction at speeds of 3 m/s, 5 m/s, and 9 m/s respectively. After how long will they meet for the first time after they started running? ?

60% of the students of a college are male. 60% of the male in the college speak French and 40% of the students of the college speak French. What percent of the female in the college do not speak French?

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