Lets name the quantity Q
[tex]Q=k* \frac{b*c}{d}
When quantity d is tripled, we get
[/tex]
[tex]Q=k \frac{b*c}{3d}
To be the relationship the same, we see that we need to[/tex] [tex]
multiply /numerator / by /3
[/tex][tex]Q = k \frac{3bc}{3d}
So the answer should be
"The product of c and b must be tripled."[/tex]