Unit 7 · Finding Procedures
Robot on a Ladder — How Many Times to the Top?
Lesson 4 of 4
About this lesson
The robot goes up (10s) and down (8s) in a repeating 18-second cycle. Convert 2 minutes to seconds, divide by the cycle length to get complete cycles, then check whether the leftover time is enough for another trip to the top.
Chapters
Question
A robot climbs all the way up and down a ladder repeatedly, without stopping.
It takes the robot 10 seconds to go up and 8 seconds to come down each time.
The robot starts at the bottom of the ladder each time.
How many times will the robot reach the top of the ladder in the next 2 minutes?
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