Seema, Meena and Reema begin to jog around a circular stadium and they complete their revolutions in 54 seconds, 42 seconds and 63 seconds respectively. After approximately how many minutes will they come together at the starting point.
Choose one answer.

a. 10 minutes

b. 6 minutes

c. 3 minutes

d. 8 minutes

• ANSWER : B (6.3 min or 6 min approx)
  
  SOLUTION :
  
  LCM of 54, 42, 63 is 378 seconds
  So 378/60 = 6.3 min 6 min approx
• 12 years agoHelpfull: Yes(24) No(7)
• consider all the statement one by one-
  if Statement A is wrong -it means it does not leads to freedom,and as only one statement can be wrong Statement B n C r correct nd both of them leads to ghost house.
  statement B & C are relational so if one is wrong then other automatically gets wrong. so none of the answer leads us to definite solution ....
  So none will be answer
• 8 years agoHelpfull: Yes(0) No(3)