SOLUTION: If the patterns of the fines continue at the same rate of increase at what speed will the fines be the same? Given: County A rate is +15, County B rate is +10; at 60mph fine for Co

Question 263404: If the patterns of the fines continue at the same rate of increase at what speed will the fines be the same? Given: County A rate is +15, County B rate is +10; at 60mph fine for County A is $0 and the fine for County B is $40.
Answer by drk(1908) (Show Source): You can put this solution on YOUR website!
If I understand the question correctly, we have two equations
(i)
(ii)
setting them equal, we get

distribute to get

combine like terms to get

subtract 10m and add 900 to get

divide to get

So, at 68 mph,
city A fine will be $120
city B fine will be $120
RELATED QUESTIONS
In Northwest Washington County, speeding fines are they determined by the formula:... (answered by greenestamps)

In a Northwest Washington County, speeding fines are determined by the formula: F =... (answered by ikleyn,Boreal)

One in five South African adults have outstanding traffic fines. If seven South African... (answered by ewatrrr)

One in five adults have outstanding traffic fines. If seven adults are randomly selected... (answered by ewatrrr)

At the last census, the population of Franklin County was 1.2 million people. At the next (answered by fcabanski)

continue the patterns... (answered by checkley77)

During the month of may, county sheriffs department was issued 117 traffic tickets for... (answered by ikleyn)

From 1988 to 1989, the population of Col- orado Springs increased by 5409, and that of... (answered by stanbon)