Answer:
A gas tank can indeed overflow if it is not full. A gas tank can overflow if the pressure inside of it is too high.
Step-by-step explanation:
Minus ka from both sides
u=ba-ka
undistribute a
u=(a)(b-k)
diivde both sides by (b-k)

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68.99
First find what one percent is. Then multiply it by 15 (your markup). Then add it to your original price.