Convert these decimals to percents .86 .019

What is the best way to answer questions with a x expression in the question. for example 3x + 10x=?

Acampus club held a bake sale as a fund raiser, selling coffee, muffins, and bacon and eggs sandwiches. the club members charged $1 for a cup of coffee, 3$ for a muffin , and $4 for a back. and egg sandwich. they sold a total of 55 items , easing $119. of the club members sold 5 more muffins than cups of coffee, how many bacon and egg sandwiches he’s did they sell

£100.80 divided by 14 equals 7.2 how would we put this as money