Question

Trains leave Bristol ! ! ! ! ! to Cardiff every 15 minutes to London every 21 minutes ! ! A train to Cardiff and a train to London both leave Bristol at 11am. At what time will a train to Cardiff and a train to London next leave Bristol at the same time?

Answer 1

Answer:

12:45 p.m.

Step-by-step explanation:

If we take lcm of 21 min and 15 min we get 105 min

therefore, 105 min after 11 a.m. would be 12:45 p.m.

Answer 2

Answer:

Step-by-step explanation:

12:45 pm