angelyay2005 angelyay2005 25-05-2018 Mathematics contestada doughnuts are sold in bags and cartons. a bag holds 4 doughnuts and a carton hold 10 doughnuts. tom buys b bags of doughnuts and c cartons of doughnuts. He buys a total of t doughnuts. write down a formula for t in terms of b and c