jmeise05 jmeise05 02-03-2020 Advanced Placement (AP) contestada Rob wanted to know the mass of his luggage before he got on an airplane. He put the luggage on a balance and added two 10 kg weights and one 3 kg weight so that the balance was even. What is the mass of his luggage? A) 23 kg B) 14 kg C) 12 kg D) 20 kg