mikewatts mikewatts

19-04-2017
Mathematics

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The height to length ratio of a brick wall is 3:20. The wall Is 40 feet long. How high is it

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ladesele ladesele

19-04-2017

do you have a picture or anything??

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19-04-2017

This is a ratio so we can simply set up a relation to find the unknown dimension...

If 3:20=h:l we can say:

3/20=h/l and we are told l=40 so:

3/20=h/40 multiply both sides by 40

120/20=h do indicated division

h=6 ft

So the wall is 6 feet high.

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