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Mathematics 22 Online
OpenStudy (anonymous):

If z varies directly with q and inversely with m, and z=2 when q=3 and m-4, find q when z=5 and m=7

OpenStudy (saifoo.khan):

$z = \frac{qk}{m}$ Find k. $2 = \frac{3(k)}{4}$ $k = \frac83$

OpenStudy (saifoo.khan):

$z = \frac83 \times \frac qm$ $5 = \frac83 \times \frac q7$Solve for q and get it's value.

OpenStudy (anonymous):

q=13.13

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