Answer 30°C Explanation If a 2kg is heated it's temperature raises by 20°C then the temperature would raise by half when a 4kg mass is heated for the same time. 1/2 × 20= 10°C If it takes 2minutes for the temperature to raise to 20°C, then the temperature would rise by 6/2 when heated for 6 minutes. 6/2 × 10 = 30°C