Respuesta :
Time = distance/speed. T = 1,275,000,000/28,000. This can be cancelled to 1,275,000/28. Rounding 28 to 30 for the estimate, divide by another ten: 120,000. Then divide by the remaining 3 from 30: 127,500/3 = 42,500. It will take approximately 40,000 hours.