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Mathematics 11 Online
OpenStudy (rebeccapink6398):

help with fractions PLEASE!!!!

OpenStudy (rebeccapink6398):

OpenStudy (welshfella):

this is a proportion problem in 4 1/2 hours it rose 1 1/4 inches so in 1 hour it rose 1 / 1/4 divided by 4 1/2

OpenStudy (rebeccapink6398):

i know i did these before :) i just dont get fractions :( i dont know how to add or subtract or divide or anything

OpenStudy (welshfella):

do do this division you convert each fraction to an 'improper fraction' 4 1/2 = 8 1/2 's + 1/2 = 9 1/2's = 9/2 1 1/4 = 4 1/4's + 1/4 = 5 / 4

OpenStudy (welshfella):

did you follow that ok?

OpenStudy (rebeccapink6398):

no i dont get it :(

OpenStudy (welshfella):

there are 8 1/2's in 4 because there are 2 1/2's in one and 4*2 = 8

OpenStudy (rebeccapink6398):

ok

OpenStudy (rebeccapink6398):

umm i still i dont know what to do next

OpenStudy (welshfella):

when we divide fractions we invert the second one ( the one we are dividing by) and multiply so|dw:1432918164656:dw|

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