Final answer:
To find the number of black trucks, multiply the total number of trucks by the percentage of black trucks, which is 35%. The answer is 16100 black trucks.
Step-by-step explanation:
To find the number of black trucks, we need to multiply the total number of trucks in the country by the percentage of black trucks. First, we convert the percentage to a decimal by dividing it by 100: 35% = 35/100 = 0.35. Then, we multiply this decimal by the total number of trucks: 0.35 * 46000 = 16100.