A shipment of TV sets, some weighing 30 kg each and the others weighing 50 kg each, has a total weight of 880 kg. If there are 20 TV sets all together, how many weigh 50 kg?

Respuesta :

the answer is 17. 17*50=850 that is most you can fit in without going over and there is still one TV that weighs 30 kg.