25.02-24=1.02
1.02/24=.0425
So the sales tax rate is 4.25%
Assuming you mean whole numbers, 41 times 1 equals 41, or 1 times 41.
The central angle COA = 2 * angle at the circumference
m < COA = 2 * 80 degrees
Using the y = mx + b formula
C = 225s + 3500
Then to transport 19 tons
C = 225(19) + 3500
C = 4275 + 3500
C = 7775