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Mathematics 13 Online
OpenStudy (anonymous):

If x and y vary directly, and x = 12 when y = 3, what will be the value of x when y = 9? i got 36? is the correct?

OpenStudy (saifoo.khan):

Calculating...

OpenStudy (saifoo.khan):

Oh Yea! u got that right! :)

OpenStudy (anonymous):

yes, y is multiplied by a factor of 3 (from 3 to 9) so x must be multiplied by a factor of 3 (from 12 to 36) congrats

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