The Napoli family combined two bags of dry cat food in a plastic container. One bag had 5/ 6 kg of cat food. The other bag had 3/4 kg. What was the total weight of the container after the bags were combined?

Last month, a 770 g box of cereal was sold at a grocery store for $3.10. however, this month, the cereal manufacturer launched the same cereal in a 640 g box, which is being sold at $2.50. what is the percent change in the unit price?