Question

1. A lighthouse 1 flashes its light every 15 minutes. A lighthouse 2 flashes
every 18 minutes. If the two lighthouses flash together at 1:00 A.M, what
time they will next flash together?​

Answer 1

Answer:

The two lighthouses will flash together at 2:30 AM.

2. There are 432 trees.

3. They will meet together again at the Regional

Office after 12 days.

4. The smallest number of candies in the box is 42.

5. They will all ring again after 120 minutes.