The royal fruit company produces two types of fruit drinks. the first type is 35% pure fruit juice, and the second type is 60% pure fruit juice. the company is attempting to produce a fruit drink that contains 40% pure fruit juice. how many pints of each of the two existing types of drink must be used to make 120 pints of a mixture that is 40% pure fruit juice?

Agroup 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?