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#1 2014-08-31 03:44:08
- ydnac
- Guest
ratio and proportion
it takes 3 men to dig 2 identical trenches in 5 hours. if all the men works at the same rate, how long will it take 5 men to dig 7 of these trenches?
#2 2014-08-31 03:56:08
- David
- Member
- From: Bumpkinland
- Registered: 2014-04-23
- Posts: 3,164
Re: ratio and proportion
http://www.mathisfunforum.com/viewtopic.php?id=14222 it's explained here.
His dominion is an everlasting dominion, Which shall not pass away, And His kingdom the one Which shall not be destroyed.
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#3 2014-08-31 04:15:45
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: ratio and proportion
Hi ydnac;
I am getting 10.5 hours just like back then.
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.
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#4 2014-08-31 04:22:41
- David
- Member
- From: Bumpkinland
- Registered: 2014-04-23
- Posts: 3,164
Re: ratio and proportion
Back then...
His dominion is an everlasting dominion, Which shall not pass away, And His kingdom the one Which shall not be destroyed.
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#5 2014-08-31 04:26:41
- bobbym
- bumpkin
- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 109,606
Re: ratio and proportion
Hi;
Post #3 is me.
In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.
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#6 2014-08-31 04:49:48
- David
- Member
- From: Bumpkinland
- Registered: 2014-04-23
- Posts: 3,164
Re: ratio and proportion
O.... Didn't notice that....
His dominion is an everlasting dominion, Which shall not pass away, And His kingdom the one Which shall not be destroyed.
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