a car salesman earns a base salary of $ 1000 per month plus a commission of $ 200 for each car he sells . if the car salesman earned $ 2000 in march , how many cars does he need to sell in april in order to double his march earnings ?
1000 + 200 x = 4000 x = 15 cars . the answer is b .
divide(subtract(multiply(2000, const_2), 1000), 200)