A 56 kg person walking 4.8 km/hr requires 887 kJ of energy per hour.

A 56 kg person walking 4.8 km/hr requires 887 kJ of energy per hour. How much further does he have to walk to consume the additional energy contained in 460 g of ground beef relative to 460 g of broiled chicken? The energy content of ground beef is 16 kJ/g, while that of chicken is 6.0 kJ/g.