6. A and B start together from the same point on a circular track and walk in the same direction till they both again arrive together at the starting point. A completes one circle in 224 s and B in 364 s. How many times will A have passed B?
a) 5
b) 7
c) 6
d) 4
Answers
Answered by
2
Answer:
I guess it's 5 times. Though I'm not sure about this.
Answered by
6
Answer:
4 times A have passed B
Step-by-step explanation:
A completes one circle in 224 s and B in 364 s
To find the time When they meet again at starting point we need to find
LCM of 224 * 336
224 = 2 * 2 * 2 * 2 * 2 * 7
364 = 2 * 2 * 7 * 13
LCM = 2 * 2 * 2 * 2 * 2 * 7 * 13
= 2912 sec
They will meet again after 2912 at starting point.
A will Complete = 2912/224 = 13 Round
B will Complete = 2912/364 = 8 Rounds
on completion of last lap A would just meet B
13 - 8 - 1 = 4 times A have passed B
Similar questions