Question

Buses to Shenley leave the bus station every 40 minutes.
Buses to Winley leave every 15 minutes.
At 8.15 a.m. buses to both Shenley and Winley leave the bus station. When is the next time that buses to both places leave at the same time?

Answer 1

Answer:

So first and foremost you look for the lcm, least common multiple of 40 and 15 minutes.

• the lcm is 120 minutes
• convert 120 minutes into hours so which is equals to 2 hours
• after converting into hours you say it 15 a.m. plus 2 hours which is equals to 10:15 a.m.
• so your answer is 10:15 a.m. you're welcome