Site navigation

3 birds fly along the circumference of a jungle. They complete one round in 27 minutes, 45 minutes and 63 minutes respectively. Since they start together, when will they meet again at the starting…

Question and options

3 birds fly along the circumference of a jungle. They complete one round in 27 minutes, 45 minutes and 63 minutes respectively. Since they start together, when will they meet again at the starting position?
  1. 945 minutes
  2. 126 minutes
  3. 135 minutes
  4. 9 hours

Answer and explanation

Correct answer: A - 945 minutes
They meet at the start after LCM(27,45,63)=33×5×7=945\mathrm{LCM}(27, 45, 63) = 3^3 \times 5 \times 7 = 945 minutes.

Practice for these exams

  • CUSAT CAT LLM

Related question papers

Related exam syllabi

More solved explanations in Arithmetic