Respuesta :
B. Just multiply. it has travelled 12h moving about 250km per hour which is 3000km
12 hours traveled. Every 2 two hours 500km. So 1 hour travels average 250km, in 12 hours traveled 12X250=3000km or You can solve deferent way , in 12 hours divide by 2 and multiply by 500km (12:2)x500=3000