Three friends earned more than $200 washing cars they pay their parents $20 for supplies and divided the rest of the money equally. write and inequality to find possible amounts each friend and identify what your variable represents

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?