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100-P1-2

1. At a bus terminal, the bus to New York leaves every 6 minutes, while the bus to
Chicago leaves every 10 minutes. If both buses left at 8 A.M., when is the next
time they will leave at the same time?

To New York

08:00 08:10 08:20 08:30 08:40
08:10 08:20 08:30 08:40
To Chicago

08:00

2. On one side of the 20-m road, pine trees are planted 3 m apart from each other.
On the other side of the same road, oak trees are planted 4 m apart from each
other. Mark each point where the pine trees and oak trees are planted, and find
where the pine trees and oak trees are planted side by side.

Pine tree 0 5m 10 m 15 m 20 m
Oak tree 0

5m 10 m 15 m 20 m
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