A man is going on a hike to the top of a mountain. It will take:
2 hours and 35 minutes to hike up the mountain.
1 hour and 55 minutes to hike back down.
If he wants to finish the hike by 11:35 a.m., what is the latest time he can start the hike?

Answer: A. 7:05 am

The total hiking time is 4 hours and 30 minutes (2h 35m + 1h 55m).
Working backward from 11:35 a.m., subtracting 4 hours brings you to 7:35 a.m.
Subtracting the final 30 minutes from 7:35 a.m. leaves you at 7:05 a.m.
Therefore, the latest he can start his hike is 7:05 a.m.

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