Melissa puts 2/5 of her babysitting money in savings and uses 1/2 of the remaining money to go to the movies. if she has $12 left, how much did she have at first?

Given that abcd is a rhombus, what is the value of x?

He ! a group of farmers planned to clean 80 acres of wheat per day to finish the work on schedule. right before the work started, they received a new piece of machinery that them clean 10 more acres per day than originally planned. as a result of increased productivity in the last day before the deadline they only had to clean 30 acres. how many acres of wheat did the group of farmers have to clean?

How many doughnuts are equal to 20 cookies.? 3 apples = 5 bananas6 cookies = 7 apples2 doughnuts = 1 banana