Answer:
c. k=4
Step-by-step explanation:
5 in 4 places is 20 4 is a constant variation
The value of constant of variation k is 4.
Since, q varies directly as r.
[tex]q=kr[/tex]
Where k is constant of variation.
Substitute.[tex]q=20,r=5[/tex] in above equation
[tex]k=\frac{20}{5} =4[/tex]
Thus, The value of constant of variation k is 4.
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