a delicatessen delivers a gigantic sandwich for the members of a jury who have been unable to reach a verdict. the sandwich of bread, meat, and cheese, costs $0.06 per lb for the bread, $3.00 per lb for the meat, and $1.50 per lb for cheese. a pound of bread supplies 10 g of protein, a pound of meat supplies 50 g of protein, and a pound of cheese supplies 40 g of protein. if each member of the jury eats a pound of sandwich, receives 30 g of protein, and pays 1.50, how much of each ingredient went into the sandwich?