A chef is preparing a lemon-lime vinaigrette. He finds that 9 ounces of lemon juice can be extracted from 3 lemons and 10 ounces of lime juice can be extracted from 5 limes. If the chef wants the vinaigrette to contain twice as many lemons as limes, what percent of the total juice blend will be lemon juice?
60
65
70
75
80
