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Lesson 3: Elapsed time

# Time word problem: puzzle

Lindsay finds out how long it took to solve a puzzle when given the start and finish time. Created by Lindsay Spears.

## Want to join the conversation?

• hi nice friends
• where is sal
• where is sal this is not sal
(1 vote)
• Amelia started a puzzle at pm and solved it at pm. How long did it take Amelia to solve the puzzle? So we can see she started at pm and ended at pm. These are both pm and we'll assume on the same day, so that means it didn't take all the way from morning to night. They're both afternoon. So she started at and we want to know how long it takes to get to when she finished the puzzle. Well, from to pm, we can figure out how long that is. That's only four minutes, there's only four minutes between and , and then to get from all the way to pm, is another 33 minutes, so Amelia worked for four minutes, plus another 33 minutes after one o'clock. She worked for four minutes before , 33 minutes after one, so she worked for a total of 37 minutes on her puzzle before solving it.
(1 vote)
• how did you write this in two min
• 5+5-5x5/5
• that aint words
(1 vote)
• It’s a bit too easy. I did it straight away in my head. Can you do a harder one?
• This is so boring why am I here still