question_answer

Four runners P, Q, R and S start running around a circular track simultaneously. If they complete one round in 16, 12, 24, 18 minutes respectively, after how much time they will meet next?

A) 2 hours 20 minutes                                             

B) 2 hours

C)  3 hours 18 minutes                                            

D) 2 hours 24 minutes

E) None of these