The taxi charging standard of a city is: the starting price is 12.5 yuan, 1.5 yuan per kilometer from 3000 meters to 5000 meters, and 2.5 yuan per kilometer after 5 kilometers If someone takes x (x > 5) kilometers, write down the cost he should pay with algebraic formula 2. If he pays 53 yuan, calculate the distance he takes Please hurry up. It's urgent
12.5+2*1.5+(x-5)*2.5=15.5+2.5x-12.5=3+2.5x
2、53=2.5x+3
X = 50 / 2.5 = 20 km