Question

Lucia, Maria, and Ariana have a meeting at 12:30. Lucia’s walk takes 10 minutes, Maria’s walk takes a quarter of an hour, and Ariana leaves 45 minutes before Maria. What time does Ariana have to leave her house to get to the meeting on time?

Answer 1

11:30

Explanation:

The wording is a little confusing, but I'll give it a try...

Lucia has a 10 min. walk, so she has to leave at 12:20 to get to the meeting on time.

Maria has a 15 minute walk (1/4 x 60 min. = 15 min), so she has to leave at 12:15 to get to the meeting on time.

If Ariana has to leave 45 minutes before Maria to get to the meeting on time, then she has to leave at 11:30 (which is 45 minutes before 12:15) to get to the meeting on time. It takes Ariana 60 minutes to get to the meeting.