The joint of meant needs to be cooked for 30 minutes per 500g plus an extra 20 minutes how long will it take to cook a joint of meat weighing 2.5kilograms
2.5 kilograms = 2500 grams. 2500/500 = 5. The time needed for 2.5 kg is 30 x 5 + 20 = 170 minutes. The answer is 170 minutes or 2 hours and 50 minutes.
