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Mathematics 9 Online
OpenStudy (anonymous):

What is the solution of the proportion? 3/8=m/72 A.27 b. 9 c. 5/9 d. 1/27

OpenStudy (amistre64):

well 3k = m 8k = 72 once you know k, you know m .....

OpenStudy (anonymous):

How do you find out what k is ?

OpenStudy (amistre64):

usually by dividing off the 8 since 8* something is equal to 72

OpenStudy (anonymous):

9

OpenStudy (amistre64):

then since k=9, and 3k = m then 3(9) = m

OpenStudy (anonymous):

27

OpenStudy (amistre64):

another method is called cross multiplication .... so there are a few ways to approach the solution

OpenStudy (amistre64):

then lets go with m=27 :)

OpenStudy (anonymous):

So the answer would be 1/27 ?

OpenStudy (amistre64):

um, no ..... m= 27 is not the same as m=1/27 :/

OpenStudy (anonymous):

Nvm I see 27 now lol sorry

OpenStudy (amistre64):

:) good luck

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