21) Working together, Julia and Amy can 22) Working alone. Darryl can harvest a field inflate twenty balloons in 6.86 minutes. in nine hours. One day his friend Matt Had she done it alone it would have taken helped him and it only took 4.24 hours. Amy 16 minutes. Find how long it would How long would it take Matt to do it take Julia to do it alone. alone? Hint: Time Together will always equal 1. If you add the time together divided by time alone for each person and then make the equation equal to 1, you should get the answer. Use a chart