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Ten Green Bottles
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Ten green bottles hanging on a wall
Ten green bottles hanging on a wall If one green bottle should accidentally fall There'd be nine green bottles hanging on the wall Nine green bottles ..... |
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| If the first bottle fell at ten past five in the morning ($5.10$ a.m.) and the others fell down at $5$ minute intervals, what would the time be when the last bottle fell down? |
Why do this problem?
This problem is one which could be done quickly as an introduction when extending or revising work on time and clocks.Key questions
When does the first bottle fall?
So when does the second bottle fall?
How many $5$ minutes are there between the first and tenth bottles falling?