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Parent 1
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Posted: Sun Jun 09, 2019 12:44 pm |
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Joined: Thu Mar 14, 2019 9:59 am Posts: 16
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Thirty-six posts were spaced evenly along a road that was 1.575km long.What was the distance in metres between each pair of posts?
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hermanmunster
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Posted: Sun Jun 09, 2019 12:53 pm |
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Joined: Fri Sep 15, 2006 8:51 am Posts: 9937
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what have you tried so far?
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Parent 1
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Posted: Sun Jun 09, 2019 9:45 pm |
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Joined: Thu Mar 14, 2019 9:59 am Posts: 16
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I have divided 1575m with 36 for 43.75 But the answer is 45
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hermanmunster
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Posted: Sun Jun 09, 2019 9:48 pm |
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Joined: Fri Sep 15, 2006 8:51 am Posts: 9937
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might be worth you drawing it out to work out how many gaps there are - remember that with a fence there are always one fewer boards than there are posts.
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Parent 1
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Posted: Sun Jun 09, 2019 9:51 pm |
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Joined: Thu Mar 14, 2019 9:59 am Posts: 16
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Just got it now the last post won’t be counted to mark the distance so there will be 35 posts so 1575/35=45
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hermanmunster
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Posted: Sun Jun 09, 2019 10:03 pm |
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Joined: Fri Sep 15, 2006 8:51 am Posts: 9937
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Yes
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Posted: Mon Jun 10, 2019 10:08 am |
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Joined: Fri Aug 24, 2018 4:26 pm Posts: 125
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Diagrams are our best friends!
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Surferfish
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Posted: Mon Jun 10, 2019 10:28 am |
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Joined: Fri Mar 10, 2017 4:06 pm Posts: 682
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Agree that diagrams are useful in questions like this.
Just a tip though, it is not necessary to draw out all 36 posts, which might be a bit laborious. Drawing just 3 or 4 posts should be enough to prove the point that there are 1 less panels than posts.
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yoyo123
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Posted: Mon Jun 10, 2019 12:32 pm |
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Joined: Mon Jun 18, 2007 2:32 pm Posts: 7654 Location: East Kent
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