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Mathematics 7 Online
OpenStudy (aizhalee):

(Medal and Fan Given) ! If the volume for 3-D polyhedra A is 300 cm3 and the volume for 3-D polyhedral B is 900 cm3. How many times bigger is the volume of pyramid B than pyramid A?

OpenStudy (aizhalee):

OpenStudy (aizhalee):

@ganeshie8 @marihelenh

OpenStudy (aizhalee):

help please

OpenStudy (marihelenh):

You can solve this by using a proportion because it is asking for the percent. \[\frac{ 300 }{ 900 }=\frac{ x }{ 100 }\] If you cross multiply, you will get, \[30000=900x\] Now, you can solve for x. You will have to round your answer.

OpenStudy (aizhalee):

so divide 3000 by 900?

OpenStudy (aizhalee):

30000*

OpenStudy (aizhalee):

ive gotten 33.3333

OpenStudy (marihelenh):

Yep, so 30% is your answer.

OpenStudy (aizhalee):

got it wrong

OpenStudy (marihelenh):

Did they say it was 300?

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