Multiply both sides by 6
(b-4)/6*6= b-4
b/2*6= 3b
Rewrite the equation
b-4= 3b
Subtract b from both sides
-4=2b
Divide both sides by 2
-2=b
Final answer: b=-2
Two-third of the jar is filled with flower
Hope this helped
General Idea:


Conclusion:
Amount of interest that Lucy to be charged in a typical month is <u>$9.75</u>