You need to serve a luncheon, including salad, to 30 library donors. You purchase 8 heads of Bibb lettuce. Each head weighs 8 ounces. After cleaning the lettuce, you have 3.4 pounds of trimmed lettuce...

You need to serve a luncheon, including salad, to 30 library donors. You purchase 8 heads of Bibb lettuce. Each head weighs 8 ounces. After cleaning the lettuce, you have 3.4 pounds of trimmed lettuce ready to add to the salad. What is the yield percent? (Enter your answer as a common percentage. Round to the nearest whole number. Eg. xx% or x%)